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Chemistry | 11th Edition | ISBN: 9780073402680 | Authors: Raymond Chang
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Calculate the volume inmL of a solution required to

Chapter 4, Problem 67P

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QUESTION:

Calculate the volume inmL of a solution required to provide the following: (a) 2.14 g of sodium chloride from a 0.270 M solution, (b) 4.30 g of ethanol from a 1.50 M solution, (c) 0.85 g of acetic acid \(\left(\mathrm{CH}_{3} \mathrm{COOH}\right)\) from a 0.30 M solution.

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QUESTION:

Calculate the volume inmL of a solution required to provide the following: (a) 2.14 g of sodium chloride from a 0.270 M solution, (b) 4.30 g of ethanol from a 1.50 M solution, (c) 0.85 g of acetic acid \(\left(\mathrm{CH}_{3} \mathrm{COOH}\right)\) from a 0.30 M solution.

ANSWER:

Step 1 of 3

Here we have to calculate the volume of the solution in mL.

(a) 2.14 g of sodium chloride from a 0.270 M solution

We can calculate the volume of a solution from its molarity. It is known that the molarity of a solution can be calculated as follows,

Molarity =

Hence volume of solution =

Here it has been given that,

Mass of NaCl = 2.14 g

Molarity = 0.270 M

Molecular weight of NaCl = 58.44 g/mol

In order to calculate the volume, 1st we have to find out the number of moles,

Number of moles of NaCl = 

                                     =     = 0.03662 mol of NaCl

Now the volume can be calculated as,

volume of solution =

               =    = 0.136 L or 136 mL solution

Hence the volume of NaCl is found to be 136 mL.

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