Question

What is the final volume of each of the following diluted solutions?

A.8.0 % (m/v) H2SO4 solution prepared from 6.00 mL of a solution that is 19.0 % H2SO4

Express your answer in liters using two significant figures.

B.1.4 M HCl solution prepared from 11 mL of a solution that is 2.0 M HCl

Express your answer in liters using two significant figures.

C.1.0 M NaOH solution prepared from 60.0 mL of a solution that is 10.0 M NaOH

Express your answer in liters using two significant figures.

D.3.0 % (m/v) CaCl2 solution prepared from 20 mL of a solution that is 12.00 % CaCl2

Express your answer in liters using two significant figures.

Answer 1

A)

use dilution formula

M1*V1 = M2*V2

1---> is for stock solution

2---> is for diluted solution

Given:

M1 = 19 %

M2 = 8 %

V1 = 6 mL

use:

M1*V1 = M2*V2

V2 = (M1 * V1) / M2

V2 = (19*6)/8

V2 = 14.25 mL

Answer: 14 mL

B)

use dilution formula

M1*V1 = M2*V2

1---> is for stock solution

2---> is for diluted solution

Given:

M1 = 2 M

M2 = 1.4 M

V1 = 11 mL

use:

M1*V1 = M2*V2

V2 = (M1 * V1) / M2

V2 = (2*11)/1.4

V2 = 16 mL

= 0.016 L

Answer: 0.016 mL

C)

use dilution formula

M1*V1 = M2*V2

1---> is for stock solution

2---> is for diluted solution

Given:

M1 = 10 M

M2 = 1 M

V1 = 60 mL

use:

M1*V1 = M2*V2

V2 = (M1 * V1) / M2

V2 = (10*60)/1

V2 = 600 mL

Answer: 6.0*10^2 mL

D)

use dilution formula

M1*V1 = M2*V2

1---> is for stock solution

2---> is for diluted solution

Given:

M1 = 12 %

M2 = 3 %

V1 = 20 mL

use:

M1*V1 = M2*V2

V2 = (M1 * V1) / M2

V2 = (12*20)/3

V2 = 80 mL

Answer: 80. mL