QUESTION 19What is the molarity of a solution that contains 17 g of NH3 in 0.50 L of solution? A. 0.029 M B. 1.0 M C. 0.50 M D. 34 M E. 2.0 M

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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 19

What is the molarity of a solution that contains 17 g of NH₃ in 0.50 L of solution?

A. 0.029 M

B. 1.0 M

C. 0.50 M

D. 34 M

E. 2.0 M

Expert Solution

Step 1

Molarity of a solution is defined as the number of moles of solute present in 1 liter of solution.

Given that,

Mass of NH₃ present = 17g

Volume of solution = 0.50 L

Molar mass of NH₃ = 17g

Molarity of the solution is given by:

$M o l a r i t y = \frac{N u m b e r o f m o l e s o f s o l u t e}{V o l u m e o f s o l u t i o n i n L} M o l a r i t y = \frac{M a s s o f s o l u t e}{M o l a r m a s s o f s o l u t e} \times \frac{1}{V o l u m e o f s o l u t i o n i n L} S u b s t i t u t i n g c o r r e s p o n d i n g v a l u e s i n t h e a b o v e e q u a t i o n : M o l a r i t y = \frac{17 g}{17 g} \times \frac{1}{0.50 L} M o l a r i t y = 2.0 M$

Therefore molarity of the solution is 2.0 M.

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