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Three students A, B and C were asked to ...

Three students A, B and C were asked to prepare 50% (mass by volume) solution of NaOH.
A dissolved 50 g of NaOH in 100 mL water.
B dissolved 50g of NaOH in 100 g of water.
C dissolved 50 g of NaOH in water to make 100 mL solution.
Which one of them has made the desired solution and why?

Text Solution

Verified by Experts

The student C made the desired solution.
Mass by volume percentage of a solution
= `("Mass of solute")/("Volume of solution")xx100`
= `50/100xx100=50%`
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