Hardness of Water A 0.512 g sample of CaCO3 is dissolved in 12 M HCl and the mixture is diluted to 250 mL. a) How many moles of CaCO3 are used? moles b) What is the [Ca²+] in the 250 mL solution? b) How many moles of Ca²+ are in a 25 mL sample of the 250 mL solution? moles

Hardness of Water A 0.512 g sample of CaCO3 is dissolved in 12 M HCl and the mixture is diluted to 250 mL. a) How many moles of CaCO3 are used? moles b) What is the [Ca²+] in the 250 mL solution? b) How many moles of Ca²+ are in a 25 mL sample of the 250 mL solution? moles

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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Question

#7
Name:
Date:
Section:
Prelaboratory Assignment: Determination of the Hardness of Water
A 0.512 g sample of CaCO3 is dissolved in 12 M HCl and the mixture is diluted to 250 mL.
a) How many moles of CaCO3 are used?
moles
b) What is the [Ca²+] in the 250 mL solution?
b) How many moles of Ca²+ are in a 25 mL sample
of the 250 mL solution?
moles
4.
mall amount of MgCl₂ solution is added to a 25 mL aliquot of the solution in problem
with EDTA to the Eriachrome Black T end point. The mixed
nd point. A similar amount of

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