Hydrochloric acid is usually purchased in concentrated

Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo Tro

Problem 120P Chapter 13

Introductory Chemistry | 5th Edition

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Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo Tro

Introductory Chemistry | 5th Edition

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Problem 120P

Hydrochloric acid is usually purchased in concentrated form with a 37.0% HCl concentration by mass and a density of 1.20 g/mL. How much of the concentrated stock solution in milliliters should you use to make 2.5 L of 0.500 M HCl?

Step-by-Step Solution:
Step 1 of 3

 

Answer:

You should use 97 ml of the stock solution and make it up to a volume of 2.5L

Explanation:

You need 2.5L of 0.5M HCl solution.

C = nV

So:

n = CV

So the no. moles HCl required = 2.5×0.5=1.25

Now we need to find how many grams this is. We get this by multiplying by the weight of 1 mole of HCl which is equal to its Mr (mass required) in grams.

Mr[HCl]= 34.46

So mass required = 1.25×34.46=43.07g

We know that the concentrated form is 37.0% by mass.

This means that 100g of this concentrated solution contains 37.0g of...

Step 2 of 3

Chapter 13, Problem 120P is Solved
Step 3 of 3

Textbook: Introductory Chemistry
Edition: 5
Author: Nivaldo Tro
ISBN: 9780321910295

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