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
Chapter11: Properties Of Solutions
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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](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2704aedc-cd59-4651-b157-0d8c71ae74f0%2Fb89a2c0a-c363-4e7f-ba97-f110b530ff34%2F6enye9o_processed.jpeg&w=3840&q=75)
Transcribed Image Text:#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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