Question

Q. 9. 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 100 g of water, student
B dissolved 25 g of KOH in 100 ml of water and
student C dissolved 25 g KOH in water and made
the volume 100 ml. Which one of them has made
required 25% solution ? Give your answer with

A (Board Term-I, 2015, Set-3GS246G)
reason.​

Answer 1

25% solution ( mass by volume ) means volume of solution should be 100ml and it should contain 25gram solute .

So, student C has made required 25%solution.