Chemistry JAMB

To what volume must 300cm³ of 0.60M sodium hydroxide solution be diluted to give a 0.40M solution?

A. 450cm³
B. 300cm³
C. 200cm³
D. 150cm³

Correct Answer:

Option A – 450cm³

Explanation

From the dilution law

C1V1 = C2V2

C1 = Initial Concentration of NaOH = 0.6M

V1 = Initial Volume of NaOH = 300cm³

C2 = Final Concentration of NaOH = 0.4M

V2 = Final Volume of NaOH =?

V2 = C1V1/C2

V2 = (0.6×300)/0.4

V2 = 450 cm³

Correct Computation as it follows the equation specified

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