November 27, 2015

Homework Help: Chemistry Lab

Posted by Natasha on Tuesday, January 11, 2011 at 11:50pm.

You are given 350 mL a stock solution of 1.66E-02 M benzoic acid, MW = 122.125 g/mol.
Answer the following questions.

A. What is the number of moles present in the original stock solution?
B. You need to dilute the benzoic acid stock solution to 1.24E-03 M. If you need 455 mL of solution,
what volume of the original stock solution do you need to dilute?
C. What is the number of moles present in the new diluted solution?
D. You mass the solution to be 462.131 g. What is the density of the solution?
E. If the actual density should be 1.05 g/mL. What is your percent error?

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