A 1.0 g sample of a substance of unknown molar mass requires 40 ml of standard solution for titration, was found that the percentage purity is exactly 250 times the molarity of titrant, the molar mass (g/mol) of the substance is? O a 52.45 O b. 62.50 O c. 31.25 Od. 31.50

A 1.0 g sample of a substance of unknown molar mass requires 40 ml of standard solution for titration, was found that the percentage purity is exactly 250 times the molarity of titrant, the molar mass (g/mol) of the substance is? O a 52.45 O b. 62.50 O c. 31.25 Od. 31.50

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter13: Titrations In Analytical Chemistry

Section: Chapter Questions

Problem 13.16QAP

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".

Question

A 10 g sample of a substance of unknown molar mass requires 40 ml of standard solution
for titration; was found that the percentage purity is exactly 250 times the molarity of titrant,
the molar mass (g/mol) of the substance is?
52.45
O b. 62.50
O c. 31.25
O d. 31.50

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