Question

A teacher told three students A, B and C to prepare 25% solution (mass by volume) of KOH. Student A dissolved 25 g of KOH in 100g of water, student B dissolved 25 g of KOH in 100 ml of water and student C dissolved 25g KOH in water and made the volume 100 ml. Which one of them has made required 25% solution ? Give your answer with reason.
CBSE Class IX Science SA 2 (3 Marks)

Answer 1

Explanation:

Solution-25 gm of KOH in water and the volume of the solution is 100 ml. Detailed Answer : Student C made the required 25% solution. 25 gm of KOH in water and the volume of the solution is 100 ml.