Question

VE TURULMALI 4. Calculate the new concentration or volume of the following solutions. Show all the step by step solution: a. 2.0 L of a 6.0 M HCl solution is added to water so that the final volume is 6.0L b. A 1.50 M HCl solution prepared from 20.0 mL of a 6.00 M HCl solution

Answer 1

a)

use dilution formula

M1*V1 = M2*V2

1---> is for stock solution

2---> is for diluted solution

Given:

M1 = 6.0 M

V1 = 2.0 L

V2 = 6.0 L

use:

M1*V1 = M2*V2

M2 = (M1*V1)/V2

M2 = (6.0*2.0)/6.0

M2 = 2.0 M

Answer: 2.0 M

b)

use dilution formula

M1*V1 = M2*V2

1---> is for stock solution

2---> is for diluted solution

Given:

M1 = 6.00 M

M2 = 1.50 M

V1 = 20.00 mL

use:

M1*V1 = M2*V2

V2 = (M1 * V1) / M2

V2 = (6.00*20.00)/1.50

V2 = 80.0 mL

Answer: 80.0 mL