Answered: 15. How much water (in mL) must be…

15. How much water (in mL) must be added to 200 mL of a 1.25 M soldium chloride (NaCl) solution to decrease its concentration to 0.770 M? (answer; 125 mL)

Introductory Chemistry For Today

8th Edition

ISBN:9781285644561

Author:Seager

Publisher:Seager

Chapter7: Solutions And Colloids

Section: Chapter Questions

Problem 7.107E

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Question

100%

For question 15 I am certain I have the correct answer after using the V1C1=V2C2 formula but it’s not matching the key. Could you let me know if I’m correct or incorrect?

250 ant
3.09 - 7.39
%3D
100mt
Imol
7.5g.
22moles
34.02
Vi
15. How much water (in mL) must be added to 200 mL of a 1.25 M soldium chloride
(NaCl) solution to decrease its concentration to 0.770 M? (answer; 125 mL)
Ca
Vi Ci= Vgx C2
200mレ×1.25N-Va x679014
325ML
->
0.7770M
0,77014
16. What is the molarity fo a solution prepared by diluting 225 mL of 2.00 M nitric
acid solution to a final volume of 275 mL? (answer: 1.64 M)
Hints for assigned chapter 13 problems

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