Question

How many grams of NaOH are required to make $100$ grams of a $5\%$ solution?

• A. $2$
• B. $5$
• C. $20$
• D. $40$
• E. $95$

Answer 1

Answer: (B)

$5$

100 grams of a 5% solution contains $\frac{100\times 5}{100}=5g$.
Hence, 5 grams of NaOH are required to make 100 grams of a 5% solution.