1)Calculate the final concentration of each of the following: 2.6 L of a 5.0 M H

ID: 528711 • Letter: 1

Question

1)Calculate the final concentration of each of the following:

2.6 L of a 5.0 M HCl solution is added to water so that the final volume is 7.0 L . Cfinal = ? M

Water is added to 0.40 L of a 12 M NaOH solution to make 4.0 L of a diluted NaOH solution. Cfinal = ?M

A15.0 mL sample of a 16 % (m/v) KOH solution is diluted with water so that the final volume is 120.0 mL . Cfinal = % (m/v)

A 75.0 mL sample of a 18 % (m/v) H2SO4 solution is added to water to give a final volume of 410 mL . Cfinal = % (m/v) 3)

2)Calculate the final concentration of the solution when water is added to prepare each of the following solutions.

17.0 mL of a 15.0 %(m/v)

K2SO4 solution is diluted to 80.0 mL Answer should be in % (m/v) 80.0 mL of a 6.00 M NaOH solution is diluted to 235 mL Answer should be in M

2.6 L of a 5.0 M HCl solution is added to water so that the final volume is 7.0 L . Cfinal = ? M

C1 = 5 ; V1 = 2.6 L

V2 = 7L,

Cfinal -->

C1*V1 = C2*V2

c2 = C1*V1/V2 = 5*2.6/7

Cfinal = 1.8571 M

now...

Water is added to 0.40 L of a 12 M NaOH solution to make 4.0 L of a diluted NaOH solution. Cfinal = ?M

M1*V1 = M2*V2

M2= M1*V1/V2

M2 = 12*0.4/4 = 1.2 M

A15.0 mL sample of a 16 % (m/v) KOH solution is diluted with water so that the final volume is 120.0 mL . Cfinal = % (m/v)

M1*V1 = M2*V2

M2 = M1*V1/V2 = 16*15/120 = 2 m/v %

A 75.0 mL sample of a 18 % (m/v) H2SO4 solution is added to water to give a final volume of 410 mL . Cfinal = % (m/v) 3)

C1*V1 = C2*V2

C2 = C1*V1/V2 = 75*18/410 = 3.2926 % m/v

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