Answered: An aqueous solution of acetone (MM =…

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

An aqueous solution of acetone (MM = 58.08 g/mol) has a molality of 5.35 m and a density of 1.25 g/mL. What is the molarity of acetone in the solution?

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Explanation

Molality(m):- The no of moles of solute is present in 1Kg of solvent .

m= $\frac{n u m b e r o f m o l e s o f s o l u t e}{w e i g h t o f s o l v e n t (K g)}$

Molarity(M):- the no of moles of solute present in 1L of solution is called Molarity.

M = $\frac{n u m b e r o f m o l e s o f s o l u t e}{v o l u m e o f s o l u t i o n (L)}$ ,

density= $\frac{w e i g h t}{v o l u m e}$

density connects both molality &molarity.

given, molality =5.35m , d= 1.25 g/ml

Molecular weight of acetone (MM=58.08g/mol)

Molarity (M)= ?

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