Question

What volume of water Is to be added to $100cm^{3}$ of $0.5M$ NaOH solution to make it $0.1$ M solution?

• A. $200cm^{3}$
• B. $400cm^{3}$
• C. $500cm^{3}$
• D. $100cm^{3}$

Answer 1

Answer: (B)

$400cm^{3}$

Answer 2

(2) : $M_{1}V_{1} = M_{2}V_{2}$

$0.5 \times 100 = 0.1 \times V_{2}$

$V_{2} = 500cm^{2}$

Volume of water to be added to 100 $cm^{2}$of solution