Question

The teacher instructed three students ‘A’, ‘B’ and ‘C’ respectively to prepare a 50% (mass by volume) solution of sodium hydroxide (NaOH). ‘A’ dissolved 50g of NaOH in 100 mL of water, ‘B’ dissolved 50g of NaOH in 100g of water while ‘C’ dissolved 50g of NaOH in water to make 100 mL of solution. Which one of them has made the desired solution and why?

Answer 1

Answer:

I think correct answer should be C because to make up desired solution they will put 50g NaOH in water so that

solute+solvent=solution

50g of NaOH+50g of water=100mL of solution

hope you have understood