A teacher told three students A, B and C to prepare 25% solution (mass by volume) of KOH. Student A dissolved 25g of KOH in 100g of water. Student B dissolved 25g of KOH in 75g of water and student C dissolved 25g KOH in water and made the volume 100ml. Which of them has made required 25% solution and why?
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mass by volume percentage = mass by solute / volume of solution x 100
for 25% of solution
25 = 25 / volume of solution x 100
so volume of solution = 100ml
therefor student c has made correct solution
for 25% of solution
25 = 25 / volume of solution x 100
so volume of solution = 100ml
therefor student c has made correct solution
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