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February 9, 2016

Search: zn(s) 2 hcl(aq) h2(g) zncl2(aq) when 50.0 g of zn reacts completely

Number of results: 8,420

chemistry
Calculate the mass of HCl required to prepare 2.5 liters of a 0.08 molar solution of HCl. H 1.01 Hydrogen 17 Cl 35.45 Chlorine
September 26, 2011 by archie

chemistry
if 50.0 mLs of HCl of unknown concentration is titrated to neutrality with 90.0 mL of .650 M NaOH. calculate the molarity of the HCl
November 14, 2011 by susan

chemistry
if 50.0 mLs of HCl of unknown concentration is titrated to neutrality with 90.0 mL of .650 M NaOH. calculate the molarity of the HCl
November 14, 2011 by susan

chemistry
indicate the concentration of each ion presentin the solution formed by mixing 20mL of .1M HCL and 10mL of .22 M HCL
December 6, 2011 by fdg

chem
How many liters of 1.00 M HCl must be added to 50.0 ml of 0.500 M HCl to give a solution whose concentration is 0.750 M?
January 2, 2012 by Anonymous

chemistry
By titration it is found that 66.1 mL of 0.125 M NaOH(aq) is needed to neutralize 25.0 mL of HCl(aq). Calculate the concentration of the HCl solution.
April 23, 2012 by trae

science
How many milliliters of 4.6 M HCl must be transfered from a reagent bottle to provide 16 g HCl for a reaction? Answer in units of mL
July 24, 2012 by hanan

chemistry
How many milliliters of 5.5 M HCl must be transfered from a reagent bottle to provide 23 g HCl for a reaction? Answer in units of mL
September 13, 2012 by cheri

chemistry
How many milliliters of 5.5 M HCl must be transfered from a reagent bottle to provide 23 g HCl for a reaction? Answer in units of mL
September 16, 2012 by cheri

Chemistry
By titration it is found that 69.9 mL of 0.151 M NaOH(aq) is needed to neutralize 25.0 mL of HCl(aq). Calculate the concentration of the HCl solution.
November 19, 2012 by Janessa

science
a bottel contains 500 ml of 2.4 M HCL. How much water should be added to dilute it to 1.6 M HCL. Solution
June 16, 2013 by aarti

CHEMISTRY
Calculate the volume in liters required to prepare a 5.00M solution of HCL using 15.4gof HCL.
November 15, 2013 by BIBI

chemistry
By titration it is found that 20.5 mL of 0.168 M NaOH(aq) is needed to neutralize 25.0 mL of HCl(aq). Calculate the concentration of the HCl solution
April 27, 2014 by Morgan

chemistry
By titration it is found that 20.5 mL of 0.168 M NaOH(aq) is needed to neutralize 25.0 mL of HCl(aq). Calculate the concentration of the HCl solution
April 27, 2014 by Morgan

Chemistry
If you have 0.150 M HCl solution available, calculate the volume of HCl(aq) necessary for this reaction. _______ml
June 24, 2014 by amber

Chemistry
What is molarity of an HCl sloution if 45.0mL of 0.250 mol/L KOH are needed to neutalize 12.3mL of HCl?
December 1, 2014 by Kathy

Chemistry 101
Iron reacts with hydrochloric acid to produce iron (2) chloride and hydrogen gas.Fe (s)+ 2 HCL (aq) -FeCl2 (aq) + H2 (g).The hydrogen gas from the reaction 2.2g of iron with excess acid is collected in a 10L flask at 25 degrees celcius. What is the pressure of the hydrogen gas...
April 30, 2009 by Eunice

mastering chemistry
A solution of volume 80.0 mL contains 16.0 mmol HCHO2 and 9.00 mmol NaCHO2. If 1.00 ml of 12 M HCl is added to this, what will be the resulting pH? (the only problem im having for this question is how to approach it, i know that by adding HCl the concentration of the CB would ...
February 28, 2009 by chma11 student

Chemistry - urgent
The following is part of a procedure for a limit test for sulphates in an NaOH sample:- Dissolve 3.0g of NaOH in 6ml of deionized water, adjust to pH 7 with HCl (approx.7.5ml) and dilute to 15ml with deionized water. Please explain how to perform this procedure. Conc HCl or 1M...
September 21, 2010 by candy

Chemistry Help
How many milliliters of 0.534 M Ba(OH)2 solution are needed to completely neutralize 34.5 mL of 0.220 M HBr solution? The reaction is Ba(OH)2(aq) + 2HBr(aq) → BaBr2(aq) + 2H2O(l) I did 0.0345 * 0.220 = 0.00759 Moles of HCl =2*0.00759= 0.01518 0.01518*1000= 15.18 mL ...
February 27, 2015 by Matthew

Chemistry
Help with any of these: 21. Aluminium sulphate is often used by gardeners to acidify soil and can be produced by the reaction 2Al(OH)3(aq) + 3 H2SO4(aq) Al2(SO4)3(aq) + 6 H2O(l) The volume of 0.275 mol/L H2SO4(aq) needed to react completely with 112 mL of 0.355 mol/l Al(...
September 9, 2012 by Emily

chemistry
Hi! i'm kinda having trouble getting this.. Don't understand it really from Ca(OH)2 + 2HCl-----> CaCl2 + 2H2O How do i calculate Ca+? :You need much more information. 1) do you mean the concentration of Ca+ ion? 2) is there excess HCl? What is given? ok It was from a ...
March 3, 2007 by Mallory

Organic Chemistry
Hi, I did an extraction experiment. I've got my basic layer, and getting my acidic salt in return. To do this, I am instructed to first "add a small amount of NaCl to help with the product precipitation". Then, again I am instructed to add HCl to "acidify" the solution. With ...
November 3, 2014 by Juan

ap chemistry
please explain titration problems. I'm a total noob at this and am trying to answer some prelab questions. Examples: 1. How many mL of a 0.800 M NaOH solution is needed to just neutralize 40 mL of a 0.600 M HCl solution? 2. You wish to determine the molarity of a solution of ...
October 2, 2008 by chris

chemistry
what simple test would you use to identify the possible presence of HCl(aq)? What result do you expect if the solution is HCl(aq)?
October 16, 2008 by Lili

chemistry
Assuming that the volumes are additive , how much water should be added to75.0 mL of 6.00 M HCl to prepare 0.500 M HCl?
December 5, 2009 by Alizza

Chemistry
A 20.0-mL sample of 0.20M sodium acetate is titrated with 0.11M HCl(aq). What is the pH after the addition of 50.0-mL HCl(aq)? (Kb of CH3CO2 = 5.6x10^-10)
March 26, 2010 by Sean

chemistry
I need 500 ml of 0.10 m HCL solution. I have a 3.785 liter container of HCL at 31.45% concentration. How do I acheive my objective?
October 16, 2010 by Daniel

chemistry
What is the concentration of HCl in a 250.0 mL sample of hydrochloric acid if 15.5 mL of 0.0100 M NaOH is needed to react with all the HCl?
February 22, 2011 by Maddy

Chemistry
For the following reaction: 6ClO2 (g) + 3H2O (l) = 5HClO3 (l) + HCl (g) If a chemist wants to make 55.0 g of HCl, how much ClO2 is needed?
November 14, 2011 by Carrie

balaji pharmacy clg ,science
why it is taken 85ml of hcl for 1 lt of solvent according to I.P. while it is 43.02ml of hcl when it is calculated?
January 13, 2013 by shaziya

balaji pharmacy clg ,science
why it is taken 85ml of hcl for 1 lt of solvent according to I.P. while it is 43.02ml of hcl when it is calculated?
January 13, 2013 by shaziya

Lone Peak High
How much of a stock (18.5 M) HCl solution would be required to make 100mL of 0.025 M HCl?
June 7, 2014 by Annie

Chemistry
How much water must be added to make 500 ml of 12.0 M HCl to 1.0 M HCl (500mL 12M) / 1.0M =6000m Is this correct?
May 8, 2015 by Carl

Chemistry
How much water must be added to make 500 ml of 12.0 M HCl to 1.0 M HCl (500mL 12M) / 1.0M =6000m Is this correct?
May 10, 2015 by Carl

chemistry
1- A compound is 87.5% nitrogen and 12.5% hydrogen. The molecular weight of the compound is 32 g/mol. Describe the molecule referencing shape, and inter-molecular forces. 2- Gaseous butadiene, C4H6 , reacts with hydrogen gas in the presence of a platinum catalyst to form ...
January 6, 2014 by Katie

chemistry
How do I prepare 10% w/v HCl from 37%(w/w) HCl (density 1.19g/ml)? Thanks.
June 22, 2009 by Carol

adult education
How many moles of HCL are in 50.0 mL of 0.600 M HCl?
July 20, 2010 by santhosh

AP Chemistry
what is the number of moles of HCl in 50mL of 1.0M HCl
December 1, 2010 by Sam

science
50 mL 3.0 M HCl(aq) that means hw much HCl . Can anybody ilaborate it
March 8, 2011 by Tumpa

Science
How do you calculate the preparation of 0.1M HCl using 33% HCl?
March 20, 2014 by Raksha

Oedipus
What actions show Oedipus wasn't completely good? In the play Oedipus Rex, I need solid evidence of Oedipus' actions that show he was not completely good nor completely evil. I have what I need for reasons he is not completely evil, but to me he seems like a pretty innocent ...
November 30, 2010 by Norah

Chemistry
out of these conditions, which would result in fastest reaction? a. 2.0M HCL, powedered CaCO3 chip, 50 degrees celsius b. 6.0M HCL, CaCO3 chip, 25 degrees celsius c. 6.0M HCL, powdered CaCO3, 50 degrees celsius. d. 2.0M HCL, CaCO3 chip, 50 degrees celsius. Im guessing C ...
September 25, 2012 by Shreya

chemistry(check my work)
If 6.01 g of K2SO3 dissolved in 930 mL of water reacts stoichiometrically according to the balanced equation in a reaction solution with a total volume of 990 mL, what is the molarity (M) of KCl produced? K2SO3(aq) + 2 HCl(aq) → SO2(g) + 2KCl(aq) + H2O(l) 6.01gx ...
April 3, 2010 by eng

AP chem
A 1.25-g sample contains some of the very reactive compound Al(C6H5)3. On treating the compound with aqueous HCl, 0.951 g of C6H6 is obtained. Al(C6H5)3(s) + 3HCl(aq) --> AlCl3(aq) + 3C6H6(l) Assuming that Al(C6H5)3 was converted completely to products, what is the weight ...
September 6, 2011 by Jen

Chemistry
We conducted a lab with antacids in class the other day and i'm having trouble doing the calculations. Well we basically took antacid tablets dissolved them in HCl, heated it and then added phenolthalien and then titrated until we saw a pink color. At 41mL we saw the pink and ...
March 15, 2010 by Anonymous

chemistry
A chemist needs a HCl solution with a molarity of less than 0.400 M for an experiment. To find out if a sample of HCl solution can be used in the lab, the chemist performs a titration to neutralize 59.2 mL of the HCl with 45 mL of 0.400 M NaOH. Based on the results, will the ...
January 31, 2014 by Matthew

chemistry
Im stuck on these few questions that seems to be getting me no where : -Determine the number of mmoles of HCl that did not react with the anatacid. c HCl = 0.1812 c NaOH = 0.1511 volume of HCl added : 75 volume of NaOH added: 29.23,19.58,33.3 - mmoles of HCl neutralized by the...
October 8, 2013 by karen

chemistry
Im stuck on these few questions that seems to be getting me no where : c HCl = 0.1812 c NaOH = 0.1511 volume of HCl added : 75 volume of NaOH added: 29.23,19.58,33.3 -Determine the number of mmoles of HCl that did not react with the anatacid. - mmoles of HCl neutralized by the...
October 8, 2013 by kathy

Chemistry
A mixture of nitrogen gas and hydrogen gas reacts in a closed container to form ammonia gas. The reaction ceases before either reactant is completely consumed. At this stage the container has 3.0 mol each of all three gases; nitrogen, hydrogen and ammonia. How many moles of ...
June 30, 2013 by megs

Chemistry Balancing Equations
I really need help with balancing these equations: PLEASE HELP!! 1. Sodium Hydrogen Sulfite reacts with hydrochloric acid to produce sulfur dioxide gas, water and sodium chloride 2. Sodium nitrate reacts with hydrochloric acid to produce nitrogen monoxide gas, water sodium ...
March 14, 2011 by Anonymous

chemistry
given 2CH3OH+3O2->2CO2+4H2O 1. Calculate number of grams of CH3OH required to react with 34.0L of O2 at STP. 2. How many liters of CO2 at 18 degrees Celcius and 6.94 atm are produced when 3.40 mol of CH3Oh is burned completely. 3. What volume of CO2 is produced if 7.11L of ...
November 13, 2012 by sheila

Chemistry
Zn+ 2HCl -> ZnCL2+h2 what volume of hydrogen at stp is produced when 2.5 of zinc react with an excess of hydrochloric acid
October 1, 2007 by Tyneice

chemistry
Zn is less active than Mg. Write the equations describing what occurs when ou mix: a)Zn with 0.5M magnesium chloride, MgCl2 b)Mg with 0.5M ZnCl2
October 28, 2010 by shannon

Organic Chemistry
how many grams of ZnCl2 are needed to prepare 250 ml of an aqueous solution with an osmolarity equal to 0.300?
March 6, 2012 by Jules

Science
zinc is mixed with Hydrochloric acid to form zinc chloride and hydrogen gas. if 7.3 grams of zinc completely reacts how much hydrogen gas will be created? if you collect the hydrogen over water at 23 degrees celcius and a barometric pressure of 770 mmHg and you recover 2.30 ...
April 16, 2014 by Tylor

Chemistry
A 23.596 g sample of aqueous waste leaving a fertilizer manufacturer contains ammonia. The sample is diluted with 79.504 g of water. A 13.803 g aliquot of this solution is then titrated with 0.1098 M HCl. It required 29.02 ml of the HCl solution to reac the methyl red endpoint...
November 14, 2011 by Mike

chemistry
A 23.596 g sample of aqueous waste leaving a fertilizer manufacturer contains ammonia. The sample is diluted with 79.504 g of water. A 13.803 g aliquot of this solution is then titrated with 0.1098 M HCl. It required 29.02 ml of the HCl solution to reac the methyl red endpoint...
November 14, 2011 by Mike

Chemistry
By titration it is found that 76.3Ml of 0.178M of NaOH(aq) is needed to neutralize 25.00mL of HCL(aq). Calculate the concentration of the HCl solution.
April 17, 2013 by Katherine

chem
how many mL of .135M Sr(OH)2 are needed to neutralize 35ml of .157M HCL I know the answer came out to 20.4 ml My only question is how do I convert HCL to Sr(OH)2
September 29, 2013 by Alexandra

Chemistry Check
The Synthesis of hydrogen chloride is written H2+Cl2==>2HCl. 3L of hydrogen are used and all gasses are at STP. The volume of HCL produced in the reaction would be _______ L. would the answer be 5.96? Three liters of H2 yields six liters of HCl, from the balanced equation. ...
January 19, 2007 by Briana

chem
Describe in detail by words how to prepare 200ml of .150M HCl from a 1.00 M HCl stock solution? Need help with this please? i used C1V1=C2V2 and got volume 2 = 33L or 0.33mL. to prepare the solution i need to weigh 1 gram of HCL (from 1.00M HCl stock solution)lets say i put it...
November 27, 2012 by vince11

Chemistry
Sorry DrBob22, I wasn't sure if you saw my last post. But, I am still a little confused. Here's the info: Antacid Brand: Life Concentration of HCl: 0.1845 M Concentration of NaOH: 0.1482 M Trial 1: 1.Mass of Table: 1.2173g 2.Volume of HCl added: 75.0 mL 3.Milliomoles of HCl ...
October 18, 2010 by Akhed-To DrBob222

chem
Which of the following pairs of substances, when mixed in any proportion you wish, can be used to prepare a buffer solution? (Select all that apply.) NaCN and HCN NaCN and NaOH HCN and NaOH HCl and NaCN HCl and NaOH and Which of the following gives a buffer solution when equal...
April 12, 2011 by Rebekah

Chemistry
The problem asked to find the amount (in moles) of reactant left. .223moles FeS and .652moles of HCl FeS+2HCl--> FeCl2+H2S .223molFeS(1moleFeCl2/1moleFeS)=.223moleFeCl2 .652molHCl(1moleFeCl2/2molHCl)=.326moleFeCl2 .223/.326x100=68.4% used HCL 100-68.4=31.6% remaining 31.6%x...
February 25, 2014 by G.C.

Chemistry
The problem asked to find the amount (in moles) of reactant left. .223moles FeS and .652moles of HCl FeS+2HCl--> FeCl2+H2S .223molFeS(1moleFeCl2/1moleFeS)=.223moleFeCl2 .652molHCl(1moleFeCl2/2molHCl)=.326moleFeCl2 .223/.326x100=68.4% used HCL 100-68.4=31.6% remaining 31.6%x...
February 25, 2014 by G.C.

Chemistry
The problem asked to find the amount (in moles) of reactant left. .223moles FeS and .652moles of HCl FeS+2HCl--> FeCl2+H2S .223molFeS(1moleFeCl2/1moleFeS)=.223moleFeCl2 .652molHCl(1moleFeCl2/2molHCl)=.326moleFeCl2 .223/.326x100=68.4% used HCL 100-68.4=31.6% remaining 31.6%x...
February 25, 2014 by G.C.

Chemistry
Na2CO3 reacts with H2SO4 to give respective salt water and carbon dioxide. Calculate the mass of pure salt formed when 300 g of Na2CO3 of 80% purity reacts with H2SO4
March 24, 2013 by Aurab

chemistry
Copper reacts with sulfuric acid according to the following equation: 2H3SO4 + Cu-> CuSO4 + 2H2O + SO2 How many grams of sulfur dioxide are created by this reaction if 14.2 g of copper reacts with 18 g of sulfuric acid?
January 20, 2011 by Maria

chemistry
Copper reacts with sulfuric acid according to the following equation: 2H3SO4 + Cu-> CuSO4 + 2H2O + SO2 How many grams of sulfur dioxide are created by this reaction if 14.2 g of copper reacts with 18 g of sulfuric acid?
January 20, 2011 by Maria

chemistry
Copper reacts with sulfuric acid according to the following equation: 2H3SO4 + Cu-> CuSO4 + 2H2O + SO2 How many grams of sulfur dioxide are created by this reaction if 14.2 g of copper reacts with 18 g of sulfuric acid?
January 20, 2011 by Jazmin

chemistry
472 mL of H2 gas was collected over water when 1.256 g of Zn reacted with excess HCl. The atmospheric pressure during the experiment was 754 mm Hg and the temperature was 26 degrees C. A. Write the balanced chemical equation (I have this) Zn + HCl ---> ZnCl2 + H2 B. What is...
November 19, 2012 by Jeremiah

Chemistry
A sample of magnesium metal reacts with hydrochloric acid solution to produce magnsesium chloride solution and hydrogen gas. a)write a balanced chemical equation for this reaction and include phase designations. The phase designations would be s for solid, aq for aqueous, and ...
October 7, 2010 by Anonymous

Chemistry
A sample of magnesium metal reacts with hydrochloric acid solution to produce magnsesium chloride solution and hydrogen gas. a)write a balanced chemical equation for this reaction and include phase designations. The phase designations would be s for solid, aq for aqueous, and ...
October 7, 2010 by Anonymous

chemistry
Earl N. Meyer found that it took 26.54 mL of a 0.0100 M KOH solution to reach the equivalence point for the titration of 25.00 mL of HCL. What is the molarity of the HCL?
June 21, 2010 by Alisha

Chemistry :(
Calculate the molality, % percent composition by weight, and the mole fraction of HCl in an aqueous 12M HCl solution that has a density of 1.20 g?mL Please help :(
January 22, 2013 by Jillian

Chem 121
Use Hess's law and the reactions 1) CH 4(g)+ Cl 2 (g)--->CH 3 CL(g) + HCl (g) 2) CH 3 Cl (g) + Cl 2 (g)---> CH 2 Cl 2 (g) + HCl (g) to determine the enthalpy for the reaction CH4 (g) + 2CH 2 (g)---> CH2 Cl 2 (g) + 2HCl (g)?
March 29, 2011 by Jessica Jones

chemistry
When performing a titration, 23.65 mL of 1.25 M calcium carbonste was used to neutralize 9.68 mL of HCl. What is the concentration of the HCl solution? (Create a balanced equation first)
June 3, 2011 by lexi

chemistry
Aluminum metal generates H2 gas when dropped into 6.00 M HCl. Calculate the mass of H2 that will form from the complete reaction of 0.365 g Al with 8.40 mL of 6.00 M HCl.
January 26, 2012 by annie

AP Chemistry
In the titration of 77.5 mL of 1.0 M methylamine, CH3NH2 (Kb = 4.4 10-4), with 0.38 M HCl, calculate the pH under the following conditions. (a) after 50.0 mL of 0.38 M HCl has been added (b) at the stoichiometric point
February 7, 2012 by Bill

chemistry
Earl N. Meyer found that it took 26.54 mL of a 0.0100 M KOH solution to reach the equivalence point for the titration of 25.00 mL of HCl. What is the molarity of the HCl?
March 22, 2012 by roger

chem SCC 151
10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret contains 0.110 M NaOH. What was the initial concentration of HCl?
July 15, 2012 by Anonymous

Chemistry
A 0.2299 N acid is prepared by mixing 100 ml of 0.1234 N H2SO4 and 0.3200 N HCl. How much HCl is needed in the preparation of the solution?
January 19, 2014 by Summer

Chemistry (heat flow, simple)
Well I know to calculate heat flow you use, q=ms delta t. for this experiment we mixed naoh with hcl into water. the total mass (volume) of the mixture was 100g the temperature change for naoh was 11.7 degrees C and for hcl it was 11.8 degrees C now im looking to calculate ...
March 12, 2010 by Abdullah

Science
Hydrogen gas(H2) and chlorine gas (CL2) react to form hydrocloric acid (HCL). What is the correct balanced chemical equation for this reaction? A-2H2+2CL2->HCL B-H2+CL2->2HCL C-2H2+CL2->2HCL D-H2+CL2->HCL I think C Pls Help me
September 29, 2015 by Jake

Chemistry
Equal volumes of 0.240 M AgNO3 and 0.140 M ZnCl2 solution are mixed. Calculate the quilibrium concentrations of Ag+, and Zn2+.
April 8, 2011 by jina

Chemistry
Xe(g) + F2(g) ----uv light---> Xe F2(s) XeF2(g) + 2F2(g) ---catalyst---> XeF6(s) XeF6(s) + H2O(l) ------> Xe O3(s) + 6HF(g) Looking at these three reactions respond the following: a) For each 0.0250 grams of xenon hexaflouride that reacts, what mass of water is ...
January 22, 2012 by Alexandra

Chemsitry
A mixture of 10.00 mL of H2SO4 and 30.00 mL of HCl required 20.00 mL of 2.500 M NaOH for complete reaction. When 30.00 mL of H2SO4 and 10.00 mL of HCl were used, 28.00 mL of 2.500 M NaOH were required. What were the concentrations of the acids? [Both were 1.000 M] H2SO4(aq) + ...
October 11, 2015 by Anonymous

Chemistry
Ammonia reacts with oxygen at 120 C to form NO and H20 in a sealed 40-L container. When 34 g of ammonia reacts with 96 g of oxygen, what is the partial pressure of the NO? What is the total pressure?
May 20, 2012 by Erin

Chemistry
How many mole of H2 will be produced if 0.500 grams of magnesium is reacted with 10.00mL of 2.0 M HCl? I've concluded the answer is 0.02 moles of H2, but I'm doubting myself a lot because I don't understand the aspects of the balanced chemical equation and how that affects the...
October 22, 2011 by Martin

Chem
HCl -> H+ + Cl- In this scenario would the HCl be a strong acid and the Cl- the base? And do you only use the word conjugate bases when dealing with weak acids? Thanks.
March 2, 2011 by Lena

chemistry
Consider the titration of 88.0 mL of 0.150 M Ba(OH)2 by 0.600 M HCl. Calculate the pH of the resulting solution after the following volumes of HCl have been added. 0.0 ml 12 ml 31 ml 44 ml 88 ml
March 28, 2011 by Sarah

chemistry
Explain how you would prepare the following dilute solutions from the more concentrated ones: a. 200ml of .500M HCL from a 6.00M HCL solution.
April 4, 2011 by cameron

Chemistry
In the reaction, K2Cr2O7 +14 HCl ----> 2KCl + 2CrCl3 + 3Cl2 + 7H2O how many moles of HCl act as reducing agent in balanced chemical equation?
April 15, 2013 by Clandestine

science
5.0g of magnesium metal reacted with 1000cm3 of 4.5M HCl solution to produce hydrogen gas. Calculate the amount of HCl left after the reaction
June 29, 2013 by samuel

chemistry
titration of 50ml of 0.25ammonia with 0.5M HCL . a) find the initial PH value b) volume of HCL is required to reach the equivalent poinnt c)the ph at the equivalence point
November 29, 2014 by anne

Chemistry
a 40.0 ml sample of ca(oh)2 was titrated with 0.0704 m hcl. the volume of hcl needed to reach equivalence point was 18.2 ml. what was the concentration of ca2+ present in the original solution?4
April 22, 2015 by Dahnrae

Chemistry
What volume of 0.149 M HCl must be added to 1.00x10^2 mL of 0.285 M HCl so that the resulting solution has a molarity of 0.205 M? Assume that the volumes are additive.
October 12, 2015 by Faith

Chemistry
The molarity of concentrated HCl purchased for laboratory use is approximately 12.1 M. How many milliliters of this reagent should be diluted to 1.000 L to make 0.100 M HCl?
January 19, 2016 by Kevin

chemistry
Phosphorus pentachloride, PCl5, reacts with water to form phosphoric acid, H3PO4, and hydrochloric acid, HCl. PCl5(s) + 4H2O() → H3PO4(aq) + 5HCl(aq) (a) What mass of PCl5 is needed to react with an excess quantity of H2O to produce 23.5 g of H3PO4? (b) How many ...
November 11, 2013 by Nadz

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