Answered: 50.0 g of methanol (CH3OH, molecular…

Chemistry: Matter and Change

1st Edition

ISBN:9780078746376

Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Chapter14: Mixtures And Solutions

Section: Chapter Questions

Problem 79A: If you dilute 20.0 mL of a 3.5M solution to make100.0 mL of solution, what is the molarity of the...

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50.0 g of methanol (CH3OH, molecular mass = 32.04 g/mol) is dissolved to make 500.0 mL of solution. What is the molarity, mol/L, of the resulting solution?

Would that be?

32.04/.50 = 64.08

Expert Solution

Step 1 Molarity

Given, mass of methanol = 50 g

Molar mass of methanol = 32.04 g/mol

Volume of solution = 500 ml or 0.5 ltr

Molarity = $\frac{n o . o f m o l e s o f s o l u t e}{V o l u m e o f s o l u t i o n (l t r)}$

Molarity = $\frac{50 / 32.04}{500 / 1000}$

= $\frac{1.56}{0.5}$ = 3.12 M

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