Q. How many gram of NaOH will be required to prepare 500 g solution containing 10%$\frac{w}{w}$ NaOH solution?
A) 100 g
B) 50 g
C) 0.5 g
D) 5.0 g
Explanation
(b)
Given, in 100 g of solution NaOH present
= 10 g
$\therefore$ In 500 g of solution NaOH present
=$\frac{10\ \times \ 500}{100}$ =50 g
So, 50 go NaOH will be required to prepare 500 g 10%$\frac{w}{w}$ NaOH solution.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.