A sample of river water at 20°C is analyzed and thefollowing parameters are found for it:Phenolphthalein alkalinity = 5.8 ×10-6 M,Total alkalinity = 2.8 × 10-5 M;pH = 8.5Hardness = 10.0 mg CaCO3/L;[Mg2+] = 3.8 x 10-5 MCalculate the concentrations of [Ca2+], [CO3 2-] and[HCO3 - ] in this water sample.

Answered: Image /qna-images/answer/dd529d3f-5377-402c-a325-fb2927ca6ff0.jpg

Phenolphthalein alkalinity = 5.8 x10-6 M, Total alkalinity = 2.8 × 10-5 M; pH = 8.5 Hardness = 10.0 mg CaCO3/L; [Mg2+] = 3.8 x 10-5 M Calculate the concentrations of [Ca2+], [CO3 2-] and [HCO3 - ] in this water sample.

Phenolphthalein alkalinity = 5.8 x10-6 M, Total alkalinity = 2.8 × 10-5 M; pH = 8.5 Hardness = 10.0 mg CaCO3/L; [Mg2+] = 3.8 x 10-5 M Calculate the concentrations of [Ca2+], [CO3 2-] and [HCO3 - ] in this water sample.

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter14: Equilibria In Acid-base Solutions

Section: Chapter Questions

Problem 37QAP: Given three acid-base indicatorsâ€”methyl orange (end point at pH 4), bromthymol blue (end point at...

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Question

A sample of river water at 20°C is analyzed and the
following parameters are found for it:
Phenolphthalein alkalinity = 5.8 ×10-6 M,
Total alkalinity = 2.8 × 10-5 M;
pH = 8.5
Hardness = 10.0 mg CaCO3/L;
[Mg2+] = 3.8 x 10-5 M
Calculate the concentrations of [Ca2+], [CO3 2-] and
[HCO3 - ] in this water sample.

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