12. Collect a sample of lake water; a) 100 mL titrate with 0.05N HCl to HCO3 eq.pt. and we need to add 0.5 mL of acid solution. What is the CO32-ALK as M and mg CaCO3/L? b) 100 mL titrate with 0.03N NaOH to CO3 eq.pt. and we need to add 0.6 mL of base solution. What is the OH ALK as M and mg CaCO3/L? c) What is the CT and pH value?

12. Collect a sample of lake water; a) 100 mL titrate with 0.05N HCl to HCO3 eq.pt. and we need to add 0.5 mL of acid solution. What is the CO32-ALK as M and mg CaCO3/L? b) 100 mL titrate with 0.03N NaOH to CO3 eq.pt. and we need to add 0.6 mL of base solution. What is the OH ALK as M and mg CaCO3/L? c) What is the CT and pH value?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

Question

12. Collect a sample of lake water;
a) 100 mL titrate with 0.05N HCl to HCO3 eq.pt. and we need to add 0.5 mL of acid
solution. What is the CO32 ALK as M and mg CaCO3/L?
b) 100 mL titrate with 0.03N NaOH to CO3 eq.pt. and we need to add 0.6 mL of base
solution. What is the OH ALK as M and mg CaCO3/L?
c) What is the CT and pH value?

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Step 4: b) Calculating the concentration of OH-

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Step 5: b) Calculating mg CaCO3/L

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