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April 19, 2014

Search: potassium permanganate..

Number of results: 1,583

chemistry
The solubility of the oxidizing agent potassium permanganate is 7.1 g per 100.0 g of water at 25 C. What is the mole fraction of potassium permanganate (KMn04) in this saturated solution? What is the molality of the potassium permanganate solution?
Friday, March 14, 2008 at 9:31pm by thanh

Chemistry
I am not sure if I calculated the exact molarity of the potassium permanganate. I multiplied the molarity of the potassium permanganate by the liters of potassium permanganate used in the titration and divided it by the total liters of solution. I don't know if that if how it ...
Wednesday, November 28, 2012 at 4:27pm by Zach

Chemistry
I am not sure if I calculated the exact molarity of the potassium permanganate. I multiplied the molarity of the potassium permanganate by the liters of potassium permanganate used in the titration and divided it by the total liters of solution. I don't know if that if how it ...
Wednesday, November 28, 2012 at 4:34pm by Zach

chemistry
Mildy basic potassium permanganate reacted with 1.25g of contaminated zinc granules to produce zinc hydroxide and solid manganese(iv)oxide.suppose 20.5ml of 0.050Molar of potassium permanganate completely reacted with contaminated zinc granules,how many moles of potassium ...
Wednesday, December 21, 2011 at 9:01am by sister ruth

Science
To determine the mass percentage of an iron sample, the dissolved sample [iron exists at the start as iron(II)] was titrated with potassium permanganate (permanganate forms manganese(IV) oxide.)If 22.25 cubic cm of 0.0123 potassium permanganate, what is the mass percent of ...
Monday, May 2, 2011 at 4:13pm by Anna

chemistry
Titration of 50.00 mL of 0.0521 M sodium oxalate, Na2C2O4, required 38.71 mL of a potassium permanganate solution: 5 C2O42- + 2MnO4- + 16H+ = 2Mn2+ + 10 CO2 + 8H2O Calculate the molarity of the potassium permanganate solution.
Saturday, June 23, 2012 at 1:03pm by mary

chem
The following equation describes the oxidation of an acidified solution of sodium oxalate (Na2C2O4) by potassium permanganate(KMnO4) 5C2O4 + 2MnO4 + 16H2SO4 --> 10CO2 + 2Mn + 16HSO4 + 8H20 What volume of 0.127M sodium oxalate in sulphuric acid will react with 3.57g of ...
Tuesday, April 7, 2009 at 5:25pm by tomi

chemistry
This equation decribes oxidation of acidified solution of sodium oxalate(Na2C2O4) by potassium permanganate(KMnO4): 5 C2O4^2- + 2Mn04^- + 16H2SO4 to produce 10Co2 + 2Mn^2- + 16HSO4^- + 8H2O. what volume of 0.127M sodium oxalate in sulphuric acid will react with 3.57g of ...
Thursday, February 6, 2014 at 1:00am by Temmick

Chemistry
A 16.48 g sample of potassium permanganate is dissolved in a 250.0 mL volumetric flask. A 125.1 mL sample of the potassium permanganate solution is added to 75.3 mL of 5.110 M hydrobromic acid in which 32.3 mL of ethanol has been dissolved (d = 0.7891 g/mL) in 3.337 L sealed ...
Wednesday, December 15, 2010 at 10:28am by Millie

AP CHEM
Please help me with thses AP CHEM homework problems and show the steps to how to find the solutions: Solid Liquid Titrations: Determine the concentration of the indicated liquid unknown given the mass of a solid standard and the buret data for the titration. #35) What is the ...
Thursday, July 31, 2008 at 10:50am by shylo

chemistry
ou weigh out Potassium Permanganate, Mass of KMnO4 (MW=158.034).......... 0.1569 g You dissolve it completely in water.......... 46.00 mL (a) Molarity of MnO4- solution........................... ________________ M You pipet out your UNKNOWN............. 0.90 mL You acidify ...
Friday, July 26, 2013 at 11:56pm by faruk

chemistry
ou weigh out Potassium Permanganate, Mass of KMnO4 (MW=158.034).......... 0.1569 g You dissolve it completely in water.......... 46.00 mL (a) Molarity of MnO4- solution........................... ________________ M You pipet out your UNKNOWN............. 0.90 mL You acidify ...
Saturday, July 27, 2013 at 12:44am by faruk

Chemistry
To oxidize cyclohexene, we use an inorganic reagent such as potassium permanganate which dissolves in water but not in cyclohexene (an organic liquid). A mixed solvent, such as ethanol and water, helps create a single phase so that the two reagents, cyclohexene and ...
Tuesday, November 4, 2008 at 6:44pm by GK

Chemistry
How do I find how many moles are in 0.204 M potassium permanganate?
Tuesday, March 30, 2010 at 6:47pm by Meg

chemistry
1.why is potassium permanganate used in the process of distillation of water?
Tuesday, September 28, 2010 at 10:40am by surya

chemistry/help
can someone please help me balance this equation?: potassium permanganate reacts with iron(II)sulfate and sulfuric acid to produce iron(III)sulfate and manganese(II)sulfate and potassium sulfate and water.
Tuesday, March 13, 2012 at 7:15pm by joseph

Chemistry
write out the balanced equation when Iron(II) sulfate, potassium permanganate, and sulfuric acid react to form Iron (III) sulfate, manganese (II) sulfate, Potassium sulfate, and water.
Monday, October 14, 2013 at 8:49pm by Jane

chemistry
The formate ion, (CHO2-), is related to the acetate ion and forms ionic salts with many metal ions. Assume that 9.7416 g of M(CHO2)2 (where M represents the atomic symbol for a particular metal) are dissolved in water. When a solution of 0.200 M sodium sulfate is added, a ...
Wednesday, April 11, 2012 at 7:57pm by bill

chemistry
the formula for propene reacts with water using potassium permanganate as a catalyst
Saturday, December 15, 2007 at 3:26pm by Renee

Is anyone here a chemistry genuis?
The formate ion, (CHO2-), is related to the acetate ion and forms ionic salts with many metal ions. Assume that 9.7416 g of M(CHO2)2 (where M represents the atomic symbol for a particular metal) are dissolved in water. When a solution of 0.200 M sodium sulfate is added, a ...
Friday, April 9, 2010 at 12:49am by timmy

chemistry
I have 50mL of0.2M of potassium permanganate solution.What is the Molarity of KMnO4?
Friday, February 5, 2010 at 7:53pm by linda

chemistry/HELP PLLEASE
can someone please help me balance this equation?: potassium permanganate reacts with iron(II)sulfate and sulfuric acid to produce iron(II)sulfate and manganese(II)sulfate and potassium sulfate and water
Friday, February 18, 2011 at 9:24am by joy

chemistry
can someone please help me balance this equation?: potassium permanganate reacts with iron(II)sulfate and sulfuric acid to produce iron(II)sulfate and manganese(II)sulfate and potassium sulfate and water
Friday, February 18, 2011 at 2:07am by joy

Chemistry
How many mL of 0.024M KMn04 (Potassium Permanganate) is required to react with 20mL of 0.112M Fe2+?
Sunday, May 29, 2011 at 5:32am by Joe

chemistry
what possible chemicals can test the presence of limonene except bromine water and potassium permanganate?
Wednesday, February 6, 2013 at 2:21am by marlo

Lab/Chemistry
In lab, I weighed out and found the molarity of 1.108g Na2C2O4 and 1.100g K3Fe(C2O4)3. I titrated an average of 0.0335L of the sodium oxalate solution with KMnO4(potassium permanganate). I then titrated an average of 0.0169L of K3Fe(C2O4)3 X 3H2O with potassium permanganate. I...
Wednesday, February 26, 2014 at 1:10pm by Tricia

Chemistry please help
In lab, I weighed out and found the molarity of 1.108g Na2C2O4 and 1.100g K3Fe(C2O4)3. I titrated an average of 0.0335L of the sodium oxalate solution with KMnO4(potassium permanganate). I then titrated an average of 0.0169L of K3Fe(C2O4)3 X 3H2O with potassium permanganate. I...
Wednesday, February 26, 2014 at 2:31pm by Tricia

chemistry /help please
can someone please help me balance this equation?: potassium permanganate reacts with iron(II)sulfate and sulfuric acid to produce iron(II)sulfate and manganese(II)sulfate and potassium sulfate and water
Friday, February 18, 2011 at 8:46am by joy

CHEM - PLS help!!
basically I think your supposed to go and dehydrate the alcohol before you test it with a) bromine in dichloromethane b) potassium permanganate I looked it up...can't believe I forgot this...( I did it) basically the permanganate forms a precip when it reacts with a double ...
Monday, February 25, 2008 at 12:20am by ~christina~

Chemistry
This is a back titration question and I'm struggling with it :/ So if you can help me, that would be very appreciated :) Q. A sample of steel wool was dissolved in excess sulfuric acid. The resulting solution (FeSO4 aq) was then titrated with potassium permanganate. 26.5mL of ...
Wednesday, February 27, 2013 at 4:11am by Rapunzel

Chemistry
Hello everybody, I'm told that potassium permanganate is dissolved in an aqueous buffer of ammonia and ammonium at equal concentrations (1M), and treated with 1M sodium hypochlorite, the permanganate ion is reduced to insoluble manganese dioxide as the hypochlorite ion is ...
Wednesday, July 18, 2007 at 6:38pm by John Peterson

Phamacy math
One teaspoonful diluted to a quart results in a 1/5000 solution. What is the amount of potassium permanganate in grams required to fill this prescription?
Friday, September 21, 2012 at 9:49pm by Nick

chem
why is it necessary to heat the oxalic acid solution before titrating it with the potassium permanganate solution
Sunday, July 20, 2008 at 3:10pm by mAddee

chemistry
Question: When a pink aqueous solution of potassium permanganate, faintly acidified with dilute sulfuric acid was treated with 10% aq. hydrogen peroxide, the reaction took place with the evolution of gas bubbles, and the pink solution was turned colorless. Further chemical ...
Thursday, May 5, 2011 at 12:14am by Shadow

pharm chem-dilution
prepare a 50ml of potassium permanganate solution such that 10ml diluted to 250ml will produce a 1 in 2000 solution
Saturday, February 16, 2013 at 2:20pm by oluchi

pharm chem-dilution
prepare a 50ml of potassium permanganate solution such that 10ml diluted to 250ml will produce a 1 in 2000 solution
Saturday, February 16, 2013 at 2:24pm by oluchi

chem
calculate the volume of water that can be treated if 50 g of potassium permanganate is added to the system. Assume that the concentrated iron (II) ions in well water is 5.0ppm
Wednesday, April 3, 2013 at 3:52pm by shyanne

chemistry
Write the equation and balance it. (If you mean potassium manganate that is K2MnO4. If you mean potassium permanganate that is KMnO4. I suspect you mean KMnO4 since yu write (VII). Using the coefficients in the balanced equation, convert moles KMnO4 to mols Fe^+2. Then M Fe = ...
Tuesday, March 8, 2011 at 1:19pm by DrBob222

Chem
1. If 36.23 mL of potassium permanganate solution is required to titrate 1.041 g of FAS (FeSO4(NH4)2SO4 * 6 H2O, molar mass = 342.0 g), calculate the molarity of KMnO4.
Monday, March 10, 2008 at 11:33pm by Chris

chem
How many grams of potassium permanganate (KMnO4) should be added to a 100 mL volumetric flask to prepare a 0.02505 M solution when the flask is diluted to the mark with water?
Wednesday, May 18, 2011 at 5:21pm by Amber

Chemistry
What would the equation be for the reaction between potassium permanganate and cyclohexene. I know it's a oxidation reaction but not sure of the equation.
Monday, February 28, 2011 at 7:00pm by Lizzy

chemical test
I'm going to do the Baeyer test (Pottasium permanganate) Instructions say to disslove 25mg of unknown or 2 drops of liquid unknown in 2ml of 95% ethanol. Slowly add 1% aqueous solution (weight/volume) of potassium permanganate, drop by drop with shaking, to the unknown. In a ...
Sunday, December 2, 2007 at 6:20pm by ~christina~

chemistry help!
Potassium has an atomic mass of 39.10amu. a sample of potassium is made up of isotopes potassium-39 (mass=38.964) and potassium-41(mass =40.962 amu). What percentage of the potassium sample is potassium-39? what percent of the sample is potassium-41?
Thursday, October 20, 2011 at 12:26am by Skylar

AP Chemistry
redox reaction: Hydrogen peroxide is added to an acidified solution of potassium permanganate. what is the total redox reaction?
Monday, September 23, 2013 at 8:45pm by Gabriella

Chem Lab
Suggest another possible oxidising agent and reducing agent that can be used to replace potassium permanganate & iron (II) ammonium sulphate haxahydrate in experiment Redox Titration
Thursday, February 9, 2012 at 12:08am by Wei AZ

Chemistry
HELP! I need to know if I am getting the right equation for the oxidation reaction of cyclohexene and potassium permanganate? I think it would be: C6H10+KMNO4 would become C6H10(OH) + MNO2 + K
Tuesday, March 1, 2011 at 11:47am by Lizzy

chemical test
It means the purple color fades and goes away. The MnO2 forms as a ppt. I suppose you COULD add enough permanganate so that you have an excess of permanganate in which case all of the unknown would be used up (in a positive test) and excess permanganate would then color the ...
Sunday, December 2, 2007 at 6:20pm by DrBob222

chemistry
I think this will answer your questions. There are a number of possible products depending upon the conditions of the oxidation. Here is a site that gives all of the possibilities. http://www.chemguide.co.uk/organicprops/alkenes/kmno4.html Note: What is called potassium ...
Tuesday, November 13, 2012 at 11:02pm by DrBob222

Chemistry
When calcium oxelate is treated with an acidic solution of potassium permanganate, the following reaction occurs: CaC2O4(s) + MnO4-(aq) = Ca+2(aq) + CO2(g) + Mn+2(aq) Balance the equation.
Saturday, October 16, 2010 at 7:49pm by Sheila

Chemistry
Would heating a tertiary alcohol change its structure and reaction with hydrochloric acid and potassium permanganate (KMnO4)? Tertiary alcohols resist oxidation, but can be oxidised by reagents such as 2,3-dichloro-5,6-dicyano-1,4-benzoquinone.
Monday, October 9, 2006 at 6:57pm by Laura

chemistry
What is the mass of the organic product between 2M solution of cyclohexene and 45% solution of potassium permanganate? The volumes of the solutions are the same and equal to 45mL. All needed densities are approximated to 1g/cm3.
Wednesday, April 13, 2011 at 10:18am by jls9119

chem lab
I agree that you are confused. Apparently this was a potassium permanganate solution and you are doing some kind of experiment on chemical kinetics; however, you haven't given any other details (and those I had to guess). One possibility is that 1/T might be 1/time and not 1/...
Saturday, October 16, 2010 at 9:08am by DrBob222

Chemistry Problem
A student proposes to use visible spectroscopy to measure the kinetics of the permanganate/oxalic acid reaction. The initial permanganate solution was very dark. For a 1 cm sample cell, the absorbance A = 2,500[MnO4]. As a practical rule of thumb, Beer's law is only accurate ...
Tuesday, January 22, 2013 at 3:04pm by Amy

Chemistry
Potassium permanganate reacts with sulfuric acid as per the equation shown below. Indicate the amount of excess reactant after the reaction of 7.24g KMnO4 and 10.32g H2SO4? 4KMnO4+6H2SO4 = 2K2SO4 +4MnSO4 +6H2O + 5O2
Tuesday, September 14, 2010 at 10:06pm by Missy

Chemistry
Potassium permanganate (KMnO4) solutions are used for the determination of iron in samples of unknown concentration. As a laboratory assistant, you are supposed to prepare 700. mL of a 0.200 M KMnO4 solution. What mass of KMnO4, in grams, do you need?
Sunday, March 9, 2014 at 10:21pm by Mark

Chemistry
How do I write the formula for the following compounds? 1.potassium permanganate 2.chromium (VI)cyanide 3. tin (II) sulfite 4. vanadium (V)fluride 5. ammonium nitrate Can you help me figure these out i am having a hard time trying to work the problems out
Tuesday, December 9, 2008 at 4:15pm by Ashley

chemistry
I need help. I don't understand this one at all. My problem is the same, just the numbers are a little different. Potassium permanganate reacts with sulfuric acid as per the equation shown below. Indicate the excess reactant after the reaction of 7.90 g KMnO4 and 10.32 g H2SO4.
Saturday, September 19, 2009 at 2:37pm by Jenn

Chemistry
Need Help On This Question.! Potassium chloride reacts with bromine forming potassium bromide plus chlorine. If 500g of potassium bromide are produced, how many grams of potassium chloride reacted?
Saturday, December 4, 2010 at 9:05pm by Jacky

chemistry
prepare M/20 solution of oxalic acid. Find out the molarity and strength in gram per litre of the given solution of potassium permanganate with the help of the prepared solution of oxalic acid
Tuesday, April 5, 2011 at 9:47am by sidd

Chemistry College Level
Well, I see 5 equivalents per molecule of KMnO4 Normality= 5*molarity calculate molarity and you have it. You have to be careful on potassium permanganate, in caculating equivalents, because the oxidation change for Mn is usually different in each reaction.
Sunday, April 17, 2011 at 4:52pm by bobpursley

chemistry
If 26.223 mL of potassium permanganate solution is required to titrate 1.041 g of ferrous ammonium sulfate hexahydrate, { FeSO4(NH4)2So46H2O }, calculate the molarity of the KMno4 solution. and the equation the lab gave me was Mn04(-) + 8H(+) + 5Fe(+2) ----> Mn(2+) + 4H2O...
Tuesday, March 11, 2008 at 4:16am by chris

chemistry
Which one of the following will have the greatest number of moles of potassium ion: 10.0 mL of .10 M potassium hydroxide, 30.0 mL of 0.15 M potassium carbonate, or 25.0 mL of 0.080 M potassium phosphate
Sunday, July 31, 2011 at 11:29pm by lori

Chemistry
What colors would you expect to see in a flame for the following compounds: potassium chloride, potassium nitrate, and potassium sulfate. Explain your answer
Thursday, April 8, 2010 at 7:02pm by Sarah

chem
In acid solutions the permanganate is reduced to Mn(II) ion which is essentially colorless and soluble. If the titration is carried out in basic solution the permanganate is reduced to MnO2, a brown-black solid which is not soluble.
Wednesday, April 28, 2010 at 11:08am by DrBob222

chemistry
One purpose of adding KIO4 is to prevent the permanganate ion from being slowly reduced to Mn+2 by H2O. Write a balanced redox equation for the reduction of permanganate ion to Mn+2 by water in acid solution.
Thursday, February 23, 2012 at 2:43pm by ella

Chemistry
KMnO4 is potassium permanganate and inorganic. CH3OH is methyl alcohol and is organic. C6H6 could stand for benzene and is organic. PdC12--I don't know this one. I wonder if you intended to type PdCl2 as in palladium chloride. That is inorganic. If it is really Pd with with 12...
Saturday, February 14, 2009 at 4:24pm by DrBob222

Chemistry
Predict the most likely redox reaction and use the spontaneity rule to predict whether the reaction will occur spontaneously. 1. An aqueous solution of potassium permanganate was reacted with an acidic solution of sodium bromide and an orange-born substance was formed. Can ...
Wednesday, February 27, 2008 at 8:15pm by Alex

Chemistry
5. 2KMnoO4 + 5 H2C2O4<----need to use this Concentration of 0.24L KMnO4 solution required to oxidize 2.7g of Oxalic Acid??? This is a complex redox reaction in which the potassium permanganate oxidizes the oxalic acid in an acidic solution (presence of H+ ions. The net ...
Friday, June 5, 2009 at 2:40am by MathMate

CHEM - PLS help!!
What would the equation look like if you added bromine (Br) in the presence of CH2Cl2 (Dichloromethane) to cyclohexanol (C_6H_11 OH). Would the solution become saturated or not??? What would the colour change be...if any?? Would a precipitate be formed?? Same as above if you ...
Monday, February 25, 2008 at 12:20am by K

chemistry
1. calculate the molecular mass of the ferrous salt. RMM 2. calculate the number of moles of ferrous salt. 1.041/RMM 3. from the equation 1 mole of permanganate reacts with five moles of the ferrous salt, hence the number of moles of permanganate is 1/5 of the number of moles ...
Tuesday, March 11, 2008 at 4:16am by Dr Russ

chemistry
Potassium permanganate reacts with sulfuric acid as per the equation shown below. Indicate the excess reactant after the reaction of 7.60 g KMnO4 and 10.32 g H2SO4. 4 KMnO4 (aq) + 6H2SO4 (aq) + 2K2SO4 (aq) + 4MnSO4 (aq)+ 6H2) (l) + 5O2 (g) I have no idea where to start or what...
Saturday, September 19, 2009 at 2:37pm by Some kid

science
To get you started: It looks like you want the equation for potassium and sulfur reacting to form potassium sulfide, that is potassium + sulfur ---> potassium sulfide Write this down using the chemical symbols for each. You will need to find the number of valence electrons ...
Tuesday, August 31, 2010 at 9:55pm by karla

Chemistry
Which of the following aqueous solutions are good buffer systems ? . 0.26 M hydrochloric acid + 0.24 M potassium chloride . 0.14 M acetic acid + 0.20 M potassium acetate . 0.16 M potassium hypochlorite + 0.23 M hypochlorous acid . 0.31 M hydrocyanic acid + 0.28 M potassium ...
Saturday, February 26, 2011 at 3:06pm by Chris

Organic Chemistry
What is/are the product(s) of the potassium permanganate reaction with (R)-4-methyl cyclohexene? Is the product a meso molecule, racemic mixture, or other mixture, and if so, what kind of mixture? If the product is a mixture, do you expect the compounds to have the same or ...
Sunday, October 31, 2010 at 11:55pm by Anonymous

CHEMISTRY
Write the net ionic equation for the reaction between...(and MUST INCLUDE STATES, please post answers to all so i can verify if im correct and explanation to one of them) a) potassium hydroxide and copper(I) nitrate b) potassium sulfite and lead(II) nitrate. c) lead(II) ...
Sunday, April 6, 2014 at 11:36am by NEED HELP PLEASE!!!

College Chemistry
Look at the ratio of permanganate ion (MnO4-) and the ammonium iron sulfate (represented by the Fe++ ion), it is 1 to 5. So one millimole of ammonium ferrous sulfate will react with 1/5 millimole of permanganate ions.
Monday, July 9, 2012 at 1:44am by bobpursley

Chemistry
Name the following ionic compounds: a. Li2O Lithium Oxide b. NaClO Sodium Hypochlorite c. Sr(CN)2 Strontium Cyanide d. Cr(OH)3 Chromium Hydroxide e. Fe(CO3)3 Iron (III) Carbonate f. Co(NO3)2 Cobalt Nitrate g. (NH4)2SO3 Ammonium Sulfite h. NaH2PO4 Sodium Dihydrogen Phosphate i...
Wednesday, September 16, 2009 at 9:08pm by Anonymous

chemistry
Potassium nitrate is made by adding potassium chloride to hydrogen nitrate in the presence of oxygen gas. Along with the potassium nitrate, chlorine and water are produced. How would write the equation?
Sunday, February 26, 2012 at 1:49pm by mark

A.P Chemistry
A solution of hydrogen peroxide, H2O2 , is titrated with potassium permanganate, KMnO4 , according to the following equation: 5 H2O2 + 2 KMnO4+ 3H2SO4 -> 5O2 + 2 MnSO4 +8H2O + K2SO4 It requires 46.9mL of 0.145 mol/L KMnO4 to titrate 50.0 mL of the solution of H2O2 . What is...
Sunday, October 22, 2006 at 11:53pm by Brenan

Chemistry
A solution of hydrogen peroxide, H2O2 , is titrated with potassium permanganate, KMnO4 , according to the following equation: 5 H2O2 + 2 KMnO4+ 3H2SO4 -> 5O2 + 2 MnSO4 +8H2O + K2SO4 It requires 46.9mL of 0.145 mol/L KMnO4 to titrate 50.0 mL of the solution of H2O2 . What is...
Sunday, March 30, 2008 at 7:09pm by Brenan

chemistry
Calculate the mass of salts needed for constructing a buffer using potassium monobasic phosphate and potassium dibasic phosphate with the total concentration of 100 mM. The solution is to be prepared in DI water and the pKa value for potassium monobasic phosphate is 7.21 and ...
Sunday, November 14, 2010 at 12:36am by dave

AP CHEMISTRY
Please could you help me predict the products of the following reactions: ( I cant figure them out) THANX in advance! 1) CaO powder is added to distilled water. 2) Acetic acid solution is added to solid sodium hydrogen carbonate. 3) Potassium permanganate solution is added to ...
Sunday, May 27, 2012 at 1:35pm by DAN

chemistry
15.45 grams of solid potassium chlorate decomposes when heated to form potassium chloride and oxygen gas. assuming 100% yeild how many grams of solid potassium will be produced?
Monday, April 11, 2011 at 6:51pm by mary

physiology
The single most important factor influencing potassium ion secretion is a) the potassium ion content in the renal tubule cells b) intracellular sodium levels c) potassium ion concentration in blood plasma d) pH of the ICF c
Monday, December 11, 2006 at 4:19am by pbear

Chem
Potassium permanganate (KMnO4) solutions are used for the determination of iron in samples of unknown concentration. As a laboratory assistant, you are supposed to prepare 200. mL of a 0.300 M KMnO4 solution. What mass of KMnO4, in grams, do you need? I got 60, but that's ...
Friday, October 5, 2012 at 3:02pm by Anonymous

CHEM
Which reactants could be used safely to prepare potassium chloride? 1. aqueous potassium hydroxide and dilute hydrochloric acid 2. aqueous potassium sulphate and aqueous sodium chloride 3. potassium and aqueous sodium chloride The answer is 1, but i don't really know how to ...
Tuesday, October 20, 2009 at 11:05am by Marrion

Chem year one
what is the balanced net ionic equation for the oxidation of hydrogen peroxide by permanganate ion and find out how many moles of hydrogen peroxide react with one mole of permanganate ion. would the answer be: 2MnO4^- + 6h^+ + 5H2O2 ---> 2Mn^2+ + 8H2O + 5O2 ratio of 2:5 0.4...
Friday, November 22, 2013 at 11:42am by kay

chemistry
When potassium chlorate is heated, it decomposes into potassium chloride and oxygen in the reaction 2KCIO3 -> 2KCI + 3O2. How much oxygen is liberated when 50 g of potassium chlorate is heated?
Saturday, November 26, 2011 at 7:35pm by Tammy

Chemistry
20.When black gunpowder explodes, potassium nitrate, carbon, and sulfur react with each other to form nitrogen, carbon dioxide, and potassium sulfide. If thee original mixture contains 50.0 g of potassium nitrate, what is the total volume of the gases produced in the reaction...
Thursday, May 15, 2008 at 5:17pm by Ali

chemistry
write a net ionic equation for the following: 1)Iron (III) chloride reacts with Potassium hydroxide to produce Iron (III) oxide, Potassium chloride, and Hydrogen gas. 2)Hydrochloric acid reacts with Potassium carbonate to produce Potassium chloride, Hydrogen gas and Carbon ...
Tuesday, October 26, 2010 at 7:16pm by rachel

College Chemistry
give the balanced equation for oxidation of iron(II)ion by permanganate and find how many millimoles of permanganate ion react with one millimole of ammonium iron(II) sulphate. I have the balanced equation: MnO4+8H+5Fe^(2+) --> Mn+4H2O+5Fe^(3+) what would be my next step?
Monday, July 9, 2012 at 1:44am by Anonymous

chem lab
KMn04 with iron(II) ammonium sulphate hexahydrate-redox titration. 1-what is the purpose of adding H2SO4 to iron sample before the titration? 2-why is there no indicator used to determine the end point for this titration? 3-suggest another possible oxidising agent and reducing...
Monday, January 30, 2012 at 2:57am by yuni

physiology
the blood-brain barrier prevents hydrophobic molecules from diffusing into the brain. T or F Excitable cells are incapable of maintaining a constant resting membrane potential. T or F The membrane of resting nerve cells is more permeable to______ions than _________ions. a....
Sunday, October 12, 2008 at 3:42am by anna

chem
The mole fraction of an aqueous solution of potassium perchlorate is 0.125. Assuming that the density of this solution is 1.20g mL-1, calculate the following: (A) the mass percent of potassium perchlorate in the solution. (B) the molarity of potassium perchlorate in the ...
Tuesday, December 14, 2010 at 5:38pm by Lori

math
You're asked to add 15 mEq of potassium chloride per 100 mL of Normosol. Potassium chloride is available as 20 mEq/ 10mls. The amount of Potassium chloride needed for a 3 L bag of Normosol would be ?
Monday, July 21, 2008 at 8:45pm by LYNN

chemistry
A potassium iodide solution is made by mixing 0.520 g of potassium iodide with 120.0 mL of water. Calculate the molality of potassium iodide. Assume that the density of water is 1.000 g/mL
Thursday, April 19, 2012 at 2:38am by hereyago

Chemistry
solution of hydrogen peroxide, H2O2 , is titrated with potassium permanganate, KMnO4 , according to the following equation: 5 H2O2 + 2 KMnO4+ 3H2SO4 -> 5O2 + 2 MnSO4 +8H2O + K2SO4 It requires 46.9mL of 0.145 mol/L KMnO4 to titrate 50.0 mL of the solution of H2O2 . What is ...
Sunday, March 30, 2008 at 9:21pm by Brenan

general chemistry
I need the oxidation half reactions, reduction half reactions, and net ionic equations for the following reactions: 1)magnesium +0.1M zinc sulfate 2)copper+0.1M zinc sulfate 3)zinc+0.1M copper(II)sulfate 4)zinc+3M HCl 5)copper+3M HCl 6)0.1M potassium iodide+ 0.1M copper(II)...
Saturday, November 13, 2010 at 1:42pm by masooma

chemistry
potassium chlorate will decompose to produce potassium chloride and oxygen gas . if you begin with 45 kg of potassium chlorate, how many liters of oxygen gas measured at stp might you expect to produce from this reaction
Friday, September 7, 2012 at 1:33pm by sam

Chem
How many potassium ions are present in 91.1g of potassium nitrate?
Thursday, December 3, 2009 at 5:32pm by Lindsey

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