Answered: You dissolve 7.33 g of solute (86.55…

General, Organic, and Biological Chemistry

7th Edition

ISBN:9781285853918

Author:H. Stephen Stoker

Publisher:H. Stephen Stoker

Chapter8: Solutions

Section: Chapter Questions

Problem 8.68EP

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Question

You dissolve 7.33 g of solute (86.55 g/mol) in 8.71 L of solvent (1.14 g/mL) to create a bright pink solution (that looks like Bina's tail). What is the concentration in ppm? Report your answer to the tenths place and do not include units.

Expert Solution

Step 1: Determination of concentration in ppm

1 ppm of a solution is 1 milligram of solute dissolved in 1 liter of solvent.

Given that,

Mass of solute dissolved = 7.33 grams

$M a s s o f s o l u t e i n m g = 7.33 g \times \frac{1000 m g}{1 g} = 7330 m g$

Volume of solvent = 8.71L

Concentration in ppm :

$C o n c e n t r a t i o n i n p p m = \frac{M a s s o f s o l u t d i s s o l v e d i n m g}{V o l u m e o f s o l v e n t i n L} S u b s t i t u t i n g c o r r e s p o n d i n g v a l u e s C o n c e n t r a t i o n i n p p m = \frac{7330 m g}{8.71 L} C o n c e n t r a t i o n i n p p m = 841.56 p p m$

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