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August 3, 2015

Search: calculate the mass of solid NaOH needed to make 200.mL of a 0.600M NaOH solution

Number of results: 85,885

chemistry
The molal boiling point constant (Kb) for water is ).51oC/m and the molal freezing point constant (Kf) for water is 1.86oC/m. Given this information here is the question... If I pour 25 mL of 0.035 M NaOH into 975 mL of water, what is the new concentration of NaOH?
April 19, 2012 by Sarah

Chemistry
Calculate pH of a solution by mixing 15.0 mL of .50 M NaOH and 30.0 mL of .50 benzoic acid solution (benzoic acid is monoprotic, its dissociation constant is 6.5 x 10^ -5). I am not sure whether I am supposed to do it by acid-base titration way or to use the formula -log (Ka...
July 28, 2009 by Soojung

chemistry
A 10.0-mL sample of vinegar, which is an aqueous solution of acetic acid, CH3COOH, requires 16.5 XML of a 0.500M NaOH solution to reach the endpoint in a titration (where the moles of acid are equal to the moles of base). What is the molarity of the acetic acid solution
May 4, 2011 by Zarion Gibbs

CHEM
A scientist wants to make a solution of tribasic sodium phosphate,Na3PO4 , for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 575mL of a solution that has a concentration of Na^+ ions of 1.40 M? Answer: mass of Na3PO4 = _____ How is this question ...
October 15, 2007 by K

Chemistry Honors
What mass of calcium bromide is needed to prepare 150.0 mL of a 3.50 M solution? (Assume that the molecular weight of CaBr2 is 200.618 g/mol) A. 105 g B. 100.42 g C. 0.105 g D. 103.35 g
December 16, 2014 by Tony

chem
I just need to know the net ionic equation and balance them. I figured the equation. but the net and balance is harder. Co(NO3)2 (aq) + NaOH (aq) = CoOH (s) + Na(NO3)2 (aq) Co(NO3)2 (aq) + Na2CO3 (aq) = CoCO3 (s) + Na2(NO3)2 (aq) Co(NO3)2 (aq) + Na3PO4 (aq) = CoPO4 (s) + Na3(...
February 18, 2012 by Ari

Chemistry
What volume of 0.5M NaOH must be added to 50mL of .0.1M benzoic acid to make 100.0 mL of 0.05 M benzoate buffer that is pH 4.5?
June 29, 2015 by Kathy

Chemistry
What volume of 0.5M NaOH must be added to 50mL of .0.1M benzoic acid to make 100.0 mL of 0.05 M benzoate buffer that is pH 4.5?
June 29, 2015 by Kathys

Chemistry
I need help with this problem please Calculate the amount of reagents you take to prepare 200 g of 9.0% (m/m) glucose solution? I already found the mass of the glucose which was part one and got 18.0 g of glucose. Now they want the mass of water and I am stuck.
December 9, 2010 by TT

chemistry
when pressure decreases what happens with the boiling point, it decreases, increases or stays the same? I read the book (the example used is water) were it says that if vapor pressure is less than the pressure pushing down on the surface the bubbles formed collapse; but when ...
May 23, 2007 by Fabiola

chemistry
assuming the density of a 5% acetic acid solution is 1.0g/ml, determine the volume of the acetic acid solution necessary to neutralize 25.0 ml of 0.10 m NaOH. also record this calculation on your report sheet.
October 22, 2009 by janvi

organic chemistry
A solution of acetic acid (CH3COOH; Ka = 1.74 x 10-5) was titrated to a final pH of 4.76 by using NaOH solution. What % of acetic acid is converted to sodium acetate (CH3COO-Na+)? Show your method
September 12, 2010 by brittany

Chemistry
Given a solution of ammonium chloride. What additional reagent or reagents are added to prepare a buffer from the ammonium chloride solution? I know the answer is NaOH but I don't know why. Can someone explain this to me please?
December 14, 2010 by Ana

chemistry
No precipitate formed when an aqueous solution of NaCl or Na2SO4 was added to the sample solution. A precipitate formed when the sample solution was made basic with NaOH. Which ion(s) are present in the sample soluiton? [Hg2]2+ [Ba]2+ [Mn]2+ I know that all three are not, but ...
October 8, 2007 by Christie

chemistry
A titration of 15.75mL HCL of an unknown molarity requires 20.35mL of 0.0903M NaOH solution. What is the molarity of the HCl solution?
October 28, 2014 by xx

Chemistry (Titration Curves)
Which of the following Acid+Base titration combinations would have a buffering region in their plot? 1)Strong Acid+Strong base (HCl+NaOH) 2)Weak acid and strong base (Acetic+NaOH) 3)Strong Acid and weak base (HCl+NH3) 4)Weak Acid and weak base (Acetic+NH3) In all cases, there ...
May 8, 2011 by Anonymous

johnson
Work these titration calculations: 1. A titration of 15.0 cm3 of household ammonia, NH3, required 38.57 cm3 of 0.78M HCl. Calculate the molarity of the ammonia. 2. What volume of 0.5M HNO3 is required to neutralize 25 cm3 of a 0.2M NaOH solution? 3. Calculate the volume of 0....
June 18, 2012 by Lemun

Chemistry
1. Calculate the pH of a buffer solution that contains 0.32 M benzoic acid (C6H5CO2H) and 0.17 M sodium benzoate (C6H5COONa). [Ka = 6.5 × 10-5 for benzoic acid] Round your answer to two places past the decimal. 2. A solution is prepared by mixing 470 mL of 0.18 M Tris·Base and...
April 8, 2013 by Erin

Chemistry
1. Calculate the pH of a buffer solution that contains 0.32 M benzoic acid (C6H5CO2H) and 0.17 M sodium benzoate (C6H5COONa). [Ka = 6.5 × 10-5 for benzoic acid] Round your answer to two places past the decimal. 2. A solution is prepared by mixing 470 mL of 0.18 M Tris·Base and...
April 8, 2013 by Erin

chem
Consider the titration of 20 mL of .105M Butric Acid HBut, with .125M sodium Hydroxide? calculate the pH before titration calculate the volume of added base to reach the end point calculate the pH halfway to the equivalence point kb(But-)= 6.6x 10^-10 and ka(HBut)= 1.5x 10^-5 ...
March 1, 2010 by simi

Chemistry
Phenol (abbreviated HOPh) is a weak acid with a Ka= 1.29 X 10^-10. What is the pH of a mixture made by mixing 100.0 ml of a 0.700 M solution of phenol with 70.0 ml of a 1.00 M solution of NaOH? Help please and please show work... I'm so confused.
May 12, 2009 by Chelsea

chemistry
Imagine that you have been asked to prepare 500ml of a 0.25 mol L solution of Sodium Hydroxide, NaOH. Describe how you would prepare this solution. Include any calculations that you would perform.
October 14, 2010 by Dexter

chemistry
The Ka for hydroflouric acid is 4.5 *10^-4 at 298K. Calculate the amount of sold NaF that is required toprepare a 250. mL acidic buffer with pH = 2.75. The inital molarity of hydroflouric acid is .250M but you have only 75mL. Part 2 Recalculate the pH of the buffer prepared in...
April 6, 2011 by John

Chemistry
how many milliliters of 0.0850 m naoh are required to titrate 50.0 ml of a solution that contains 1.85 g of hcl per liter to the equivalence point?
February 22, 2011 by Charles Maxey

Chemistry
How many mL of the 0.1029 M standard NaOH solution is required to titrate 0.2247 g sample of KHP to the phenolphthalein end point?
October 9, 2012 by Erin

college chemistry
If KHP sample #1 requires 27.30 mL of NaOH solution to reach an endpoint, what volume should be required for samples #2 and #3?
October 25, 2012 by Kristen

chemistry
What is the pH of a solution when 1ml of 0.10M NaOH is added to 100ml of buffer containing 0.1M acetic acid and 0.1M sodium acetate?
December 2, 2012 by hawi

chemistry
Write the balanced equation for the neutralization reaction between H3PO4 and NaOH in aqueous solution. Phases are optional.
May 14, 2014 by Karen

chem: Drbob222
Hi I have a follow up to a question that was answered previously. New question: So when the HPO4(2-) reacts with the NaOH, will the equation be this?: HPO4^(2-) + NaOH --> H2O + NaPO4(2-) But how do I write the equation for the H2PO4^- and HCl? H2PO4^- + HCl --> Here is ...
January 30, 2012 by jean

Chemistry
What mass of NaOH(s) must be added to 300 mL of HCl 0.25 M in order to completely neutralize this acid?
May 11, 2012 by Katie

chemistry
URGENT!! You wish to prepare 1 L of a 0.02 M potassium iodate solution. You require that the final concentration be within 1% of 0.02 M and that the concentration must be known accurately to the fourth decimal place. How would you prepare this solution? Specify the glassware ...
October 11, 2010 by Martin

Chemistry -thanks
Hi,there was an error with the procedure. 1.0g NaOH sample was dissolved in 5ml of water and acidified with 4ml of conc. nitric acid,not dilute nitric acid. This was then made up to 15ml with water.After acidifying with conc. nitric acid instead of dilute nitric acid, no such ...
September 23, 2010 by candy

chemistry
Enthalpy and Entropy in Reactions and Solutions Introduction In the course of most physical processes and chemical reactions there is a change in energy. In chemistry what is normally measured is H (enthalpy change), the change in heat at constant pressure and ignoring any ...
November 30, 2010 by allison

chemistry
please check if I did this right ... calculate the mass of white solid CaCO3 that forms when 98ml of a 0.1M Ca(NO3)2 solution is mixed with 54 ml of a 2.5M Na2CO3 solution. Ca(NO3)2 + 2NaCO3 -> Ca(CO3)2 + 2NaNO3 .098*0.1 =.0090 .054*2.5 =.135 limiting reactant is Ca(NO3)2 ....
January 29, 2010 by Krissy

chemistry
Thimerosal is an organic compound (gram molecular mass = 404.8 g/mol) used to inhibit bacterial growth. A .100%solution of thimerosal is sometimes used as an antiseptic. Assume that this solution has a density of 1.00 g/mL. A. how many grams of thimerosal are found in .500 g ...
April 7, 2013 by Tyler

chemistry
26.5 moles of a .2 M aqueous solution of NaOH is required to titrate 50 ml of an aqueous solution of HNO3, what is the concentration of HNO3. I don't want the answer, I want to know how to do it.
March 14, 2011 by Daniel

chemistry
26.5 moles of a .2 M aqueous solution of NaOH is required to titrate 50 ml of an aqueous solution of HNO3, what is the concentration of HNO3. I don't want the answer, I want to know how to do it.
March 14, 2011 by Daniel

chemistry
A flask containing 5ml of 3M hcl solution required 14.45ml of 1M NAOH for titration. How many moles of hcl are present in the solution. The density of 3M hcl is 1.05g/ml My calculation 0.005 x 3 = 0.015m 0.01445 x 1 = 0.01445m Who helps me to solve it
September 2, 2012 by Fai

Chemsitry
Calculate the molar mass of an unknown molecular compound mixed with solid camphor C10H16O, heated and then cooled giving the following data. show all steps in calculation. mass of unknown: 0.195 g Tf(camphor)= 179.8 degree C Kf(camphor)=-40.0 degree C/m mass of camphor-25.03g...
July 10, 2013 by Kelly

chemistry
Calculate the mass of nickel(II) sulfate and the mass of water contained in 200. g of a 6.00% solution of nickel(II) sulfate
March 4, 2014 by Sarah

AP CHEMISTRY
Calculate the pH at the equivalence point in titrating 0.100 M solutions of each of the following with 0.080 M NaOH. A) benzoic acid (C6H5COOH) Ka= 6.3*10^-5 for it
March 1, 2012 by DAN

Chemistry - PLEASE HELP!!!
25g NaOH is dissolved in 10 ml h20 and added to 100 ml volumetric flask. Calculate the concentration in molarity.
May 17, 2015 by Marie

Chem--buffers
Explain why a mixture formed by mixing 100 mL of 0.100M CH3COOH and 50 mL of 0.100M NaOH will act as a buffer? in adittion to this, how do you identify if a an aqueous solution is a buffer solution, such as a solution with an acid and a base, but no common ion? is it possible ...
February 28, 2010 by Rav

Chemistry -help
To determine the sodium carbonate content & total alkali in NaOH, the following steps were performed:- 1) 2.0g of NaOH was dissolved in 80ml of CO2 free water. 2) 3 drops of phenolphthalein indicator were added and the solution was titrated with 1M HCl. Colour changed from ...
September 18, 2010 by anne

Chemistry
How would you make 100 mL of a carbonic acid buffer at 0.2 M and pH = 9.8 using 0.5 M HCO3 and either 0.1 M NaOH or 0.1 M HCl and water?
January 28, 2015 by Ammu

Chemistry
Can anyone tell me if I am right on these? Calculate the amount of solute needed to make each of the solutions 225g of 10% (m/m) K2CO3 solution Answer: 22.5g K2CO3 0.50kg of 18% (m/m) KOH solution Answer: 90g KOH
May 19, 2011 by Julie

ochem
when the concentration of CHBr3 and NaOH are both .145, the rate of the reaction is .0040 M/s. What is the rate of the eaction if the concentration of CHBr3 is doubled?if the conc. is halved?if the two conc. are both increased by a factor of five? CH3Br+NaOH-->CH3OH+NaBr
November 13, 2010 by natalie

ochem
when the concentration of CHBr3 and NaOH are both .145, the rate of the reaction is .0040 M/s. What is the rate of the eaction if the concentration of CHBr3 is doubled?if the conc. is halved?if the two conc. are both increased by a factor of five? CH3Br+NaOH-->CH3OH+NaBr
November 14, 2010 by natalie

chemistry
a 23.74 mL volume of .0981 M NaOH was used to titrate 25 mL of a weak monoprotic acid solution to the stoichiometric point. determine the molar concentration of the weak acid solution. express in correct sig figs.
March 25, 2013 by Anonymous

Chemistry
Calculate the enthalpy change of formation for the following reactions using Hess's law, and the enthalpies of formation given in Figure 4: b) MgO +2HCl --> MgCl2 +H2O c)NaOH+ HCl -->NaCl +H20 Figure4: the given enthalpies of formation compound values are: Mg(OH)2 is ...
January 30, 2014 by BOB

Chemistry- Please Help!!
Calculate the molar mass of an unknown molecular compound mixed with solid camphor C10H16O, heated and then cooled giving the following data. show all steps in calculation. mass of unknown: 0.195 g Tf(camphor)= 179.8 degree C Kf(camphor)=-40.0 degree C/m mass of camphor-25.03g...
July 10, 2013 by Kelly

chemistry
Select only the True statements about buffer systems. Select all that are True. 1. Starting with NH3(aq) and adding a small amount of HCl(aq) will make a buffered solution. 2. The blood buffer, among other things, is supported by carbonic acid and its conjugate base ...
March 28, 2014 by bekah

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
A buffer is made up of .300 L each of .500 M KH2PO4 and .317 M K2HPO4. Assuming tha the volumes are additive, calculate a) the pH of the buffer b) the pH of the bugger after the addition of .0500 mol of HCl to .600 L of the buffer. c) the pH of the buffer after the addition of...
May 1, 2007 by James

chem
given the mass of the original sample and the mass of the solid chloride produced, how do you calculate the mass of the matal in the unknown?
April 15, 2008 by ashley

chem
what will happen to bromothymol blue indicator: a.) after addition of HCl, how does it affects the equilibrium b.) after addition of NaOH, hoe does it affect the equilibrium c.) after re-addition of NaOH Rewrite the net equation for the equilibrium? is this an exothermic ...
November 26, 2012 by kacey12

Chemistry - help please
In an experiment, when 25 mL of 5.5 x 10^-3 M NaOH is mixed with 30 mL of 7.5 x 10^-3 M Fe(Br)2, a hydroxide compound is formed (Ksp = 1.8 x 10^15). Which of the following describes the resulting solution? a. The product is unsaturated b. The mixture product is saturated c. ...
October 15, 2013 by Eren

chemistry
this is a really long question. i don't understand how to answer it. help please. A 10.0% aquueous solution of sulfuric acid has a density of 1.0661 g/mL at 20 degrees celsius. A. how many grams of H2SO4 are found in 50.0 g of this solution? B. how many grams of water are ...
April 7, 2013 by Nicole

science(chem)
I was wondering how does one make a saturated chemical solution? I'm supposed to make one, is there a way I can determine the ammount solute needed for a certain amount of solvent? If not, how do I make a saturated solution? Thank you
September 20, 2008 by ~christina~

chemistry
A 2 x 10^-3 M solution of MnSO4 is gradually made more basic by adding NaOH. At what pH will manganese(II) hydroxide begin to precipitate? [Ksp of Mn(OH)2=2 x 10^-13]
December 18, 2009 by lauren

CHEMISTRY
A 6.6 × 10–4 M solution of MnSO4 is gradually made more basic by adding NaOH. At what pH will manganese(II) hydroxide begin to precipitate? For Mn(OH)2, Ksp = 2.0 × 10–13.
May 3, 2010 by Anonymous

Chemistry
Which compound forms a colored aqueous solution? a) CaCl2 c) NaOH b) CrCl3 d) KBr i think its Cr because its an transition metal. but im not sure.
October 21, 2010 by John

biiochemistry
showing by calculations how would i prepare the following solutions : 200ml stock solution of 1M NaOH (mwt 40g/mol)
February 9, 2011 by ZANELE

Chemistry
What is the concentration of NaNO2 if 2.13g of N2O3 is added to excess NaOH and the resulting solution is diluted to a total volume of 500.0 mL?
July 17, 2011 by larry

Chemistry
If 11.6 mL of 0.17 M MgCl2 are mixed with 24.9 mL of 0.58 M NaOH, what will be the final concentration of Mg2+ in solution when equilibrium is established? Assume the volumes are additive. Ksp = 1.2 10-11 for Mg(OH)2
March 14, 2013 by Gregory

Chemistry
If 18.7 mL of 0.14 M MgCl2 are mixed with 24.2 mL of 0.52 M NaOH, what will be the final concentration of Mg2+ in solution when equilibrium is established? Assume the volumes are additive. Ksp = 1.2 10-11 for Mg(OH)2.
March 14, 2013 by Arturo

Chemistry
Calculate the mass of water that must be added to .45 mol of glucose to make a solution of 15 percent by mass. The molar mass of glucose is 180g/mol
March 1, 2013 by Dal

chemistry
A sample of 10.00g of a solid unknown was dissolved in 25.00g of water. Assuming that pure water freezes at 0.0°C and the solution freezes at -5.58°C, what is the molal concentration of the solution? What is the molar mass of the solid? Show your calculation. I got that the ...
January 24, 2015 by paula

Chemistry
A. Ionic solid B. Molecular solid C. Covalent solid D. Graphic solid Which of this solids is soluble in water, conductive in solution, brittle and could have a melting point of 2800 C. I think the answer is A.
December 16, 2014 by Morgan

Chemistry
25.0 mL of a NaCl solution (concentration unknown) was found to react with 20 drops of the chloride test solution from the PU Chloride Test Kit. Calculate the mass of NaCl (in grams) in this solution. Calculate the mass of NaCl required to prepare 0.250 L of a NaCl solution ...
October 3, 2010 by kt

Chemistry
I need to write the equation for the neutralization reaction of NaOH and nicotinic acid (C5H4NCOOH). Here is my attempt: C5H4NCOOH + NaOH → C5H4NCOONa + H2O First of all, is the formula for nicotinic acid correct? I am finding mixed answers when I search it on the ...
January 13, 2013 by Alisha

Organic Chemistry
What reagents will separate, isolate, and purify 50% phenanthrene, 40% methyl 4-aminobenzoate, and 10% 1,4-dibromobenzene? The reagents to chose from are: 1 M naoh, 6 M naoh, 1 M hcl, 6 M hcl, 1 M nahco3, saturated sodium chloride, diethyl ether, 95% ethanol, methanol, ...
October 1, 2013 by Ryan

More Organic Chem.
1. Would you expect ibuprofen to be soluble or insoluble in 1.0 M NaOH? Explain. 2. Thymol is very slightly soluble in water and very soluble in 1.0 M NaOH. Explain. Any info. would help! Below are two web pages. The first shows ibuprofen has a -COOH group which makes it an ...
February 5, 2007 by Richard

Chemistry-Repost for DrBob222
My question was: A saturated solution of MgF2 at 23 degrees C was prepared by dissolving solid MgF2 in 1 L water. The Ksp of MgF2 is 1.5e-5. a.)Calculate the mass of MgF2 dissolved. b.) When .1 mols of solid KF was dissolved in the MgF2 solution, precipitation was observed. ...
March 21, 2014 by Anonymous

Chemistry
A solution of acetic acid having a concentration of about 0.2M is to be titrated using 0.200M NaOH. Select an indicator for the titration. what salt will the solution contain at the equivalence point? what is the approximate concentration of this salt at the equivalence point...
May 15, 2010 by Alison

Chemistry
2NaOH + CuSO4 = Na2SO4 + Cu(OH)2 100g of Cu(OH)2 is needed. Assuming 100% yield, how much of 1M NaOH and 0.5M CuSO4 must be used in mL? Any help would be awesome- even a formula on how to solve
April 1, 2014 by Susan

Chemistry
Calculate the concentration of a 50.0mL sample of HBr acid, which was titrated with 37.7 mL of 0.57 M NaOH base. Why is an overshot endpoint not a good titration?
April 10, 2008 by Jared

Chemistry
Construct the data chart and the pH curve for the titration of 25 mL of 0.1 M CH3COOH with 0.1M NaOH. Add the titrant 1 mL at a time and calculate the pH after each addition
April 19, 2011 by Jake

Chemistry
PartA: What volume of 10.0M NaOH is needed to prepare a buffer with a pH of 7.79 using 31.52 g of TrisHCl? TrisHCl is a weak base and the molecular weight is 157.67 g/mol. I found the solution, it is 6.67 milliliters. Part B: "The buffer from Part A is diluted to 1.00 L. To ...
April 24, 2009 by Linda

General Chemistry
A 0.484 g sample of impure NH4Br is treated with 25.00 mL of 0.2050 M NaOH & heated to drive off the NH3. The unreacted NaOH in the reaction mixture after heating required 9.95 mL of 0.0525 M H2C2O4 to neutralize. How many grams of NH4Br were in the original sample? What is ...
July 12, 2013 by <3

Chemistry
Explain why methyl red would be a good indicator for a titration of 0.25M NaOH with .025M HNO3, but a poor choice for use in a titration of 0.25M NaOH with 0.25M HCN. I'm pretty sure the first step is to find the pH of the two titrations (and then compare those to the pH range...
May 17, 2014 by Julia

Normality headache
I do not fully grasp the idea of Normality. What are the normality and the molarity of a sulfuric acid solution if 30mL of it are required to completely neutralize 24mL of 0.02N NaOH? (one of them, N or M, is never equation dependent because...??) HCl(aq) + NaOH(aq)--> NaCl...
June 16, 2006 by Kizner (chem)

Chemistry
How many grams of chlorine are needed to make 5.00 X 10^6 g of a solution that is 1.50 ppm chlorine by mass?
December 5, 2011 by Sam

Chemistry 30
50.0 mL of 0.200 M NaOH neutralized 20.0 mL of sulfuric acid. Determine the concentration of the acid. Show a balanced chemical equation, all work, and the answer rounded to three decimal places.
October 2, 2014 by Ade

chemistry
given the reactant amounts specified in each chemical eguation, determine the limiting reactant in each case: a. HCL+NaOH->NaCl+H2O 2.0 mole of HCl 2.5 mole NaOH b. Zn+2HCl->ZnCl2+H2 2.5 mole Zn 6.o mole HCl c. 2Fe(OH)3+3H2SO4->Fe2(SO4)3+6H2O 4.0 mole Fe(OH)3 6.5 mole...
March 3, 2010 by christina

chemistry
a 23.74 ml volume of .0981 M NaOH was used to titrate 25 mL of a weak monoprotic acid solution to the stoichiometric point. determine the molar concentration of the weak acid solution. Express your answer to the correct number of significant figures.
April 1, 2013 by Joann

general chem.
1. Sour pickles have a pH of about 3.00. The [OH –] in a typical sour pickle is 8. A solution of sodium hydroxide was prepared for a chemical analysis using 0.65 g in 500 mL. The hydrogen ion concentration in the solution is Use the information to answer the next question. ...
June 18, 2006 by !!!

chemistry
0.35 grams of an unknown solid containing magnesium hydroxide is combined with 50 mL of 0.25M nitric acid. If 34.5mL of 0.1 NaOH was required to reach an endpoint, determine the concentration of magnesium hydroxide inthe sample.
November 17, 2010 by Steve

AP CHEM
It was found that 39.9 mL of this diluted solution solution was needed to reach the stoichiometric point in a titration of 7 mL of a phosphoric acid solution according to the reaction 3KOH(aq) + H3PO4(aq) ! K3PO4(aq) + 3H2O(L) Calculate the molarity of the solution. Answer in ...
September 26, 2013 by Ankit

Chemistry
If you could help me it would be greatly appreciated, Thanx Question 1 In a titration, a 20mL sampl of NaOh(aq) was neutralized by 14.9 mL of 0.13 mol/L H2SO4(aq). The concentration of the base is A. 8.7 mol/L B. 0.35 mol/L C. 0.19 mol/L D. 0.048 mol/L Question 2 A lab ...
September 22, 2006 by Brittany Rusk

Chemisty (please read soon)
which will become a buffer in 1L of H2O? a) 0.3 mole KOH & 0.3 mole HBr b) 0.5 mole NH3 & 0.5 mole HCl c) 0.2 mole NaCl & 0.3 mole HCl d) 0.2 mole NaOH & 0.2 mole HBr e) 0.4 mole HC2H3O2 & 0.2 mole NaOH I think that the answer is e. Is that correct?
April 29, 2012 by Zac

Chemistry
How many grams of chlorine gas are needed to make 5.40 x 10 6 g or a solution that is 1.40 ppm chlorine by mass?
November 5, 2014 by Dustin

Chemistry
For each of the following unbalanced equations, suppose that exactly 15.0g of each reactant is taken. Determine which reactant is limiting, and calculate what mass of each product is expected. assume the limiting reactant is completely consumed. a)Al+HCL->AlCl3+H2 b)NaOH+...
February 16, 2009 by Megan

chemistry
write the molecular, ionic and net ionic equation for the following Ph(NO3)2 + NaOH Pb(NO3)2 + Na2CO3 Ni(NO3)2 + NaOH Ni(NO3)2 + Na2Co3
October 20, 2011 by TROUBLED

Chemistry help needed
How many milligram of lysozyme (MW=14,600 g/mol) are needed to make 3 liters of a 10^-6 M solution?
September 15, 2013 by Kris

Chemistry
Calculate the volume of NaOH 0.5 mol/L necessary to neutralize 300 mL of HCl 0.2 M. na= how do I calculate this? Ma= 0.2 M Va= 0.300 L nb= 0.5 mol Mb= 0.5 M Vb= ?
May 13, 2014 by Alyssa

Chemistry - titration lab
Hello. For my chemistry of solutions class, we had a titration lab where we titrated NaOH into an HCl + H2O mix. This was a preparatory titration for the next one consisting of the hydrolysis of ethyl acetate into acetic acid with H+ ions as a catalyst (in our case the HCl). ...
July 31, 2012 by Robertq

chemistry
hi, I am trying to find the solubility of Sodium Acetate by using 0.100 mol Hydroxide(base) and 0.837 mol acetic acid( vinegar). The theoretical solubility of sodium acetate is 82.3g/100ml at 25C. Doing calculations we would want NAOH concentration of 10.47mol/l to react with ...
June 3, 2008 by john

Chemistry
Why should the sodium hydroxide pellets be completely dissolved in the preparation of the NaOH solution? please explain thouroughly, thanksss in advance!!
March 18, 2011 by Maria

Chemistry
Is it quantitatively acceptable to titrate all KHC8H4O4 samples with the NaOH solution to the same dark red endpoint ?Explain. thank for helping~
October 31, 2011 by limit

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