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Question: > A solution is prepared by adding 5 g of a solute ‘X’ to 45 g solvent ‘Y’ what is the mass per cent...

A solution is prepared by adding 5 g of a solute ‘X’ to 45 g solvent ‘Y’ what is the mass per cent of the solute ‘X’?

A

10%10\%

B

11.1%11.1\%

C

90%

D

75%

Answer

10%10\%

Explanation

Solution

(1) : Mass per cent of X

= MassofxMassofsolution×100\frac{Massofx}{Massofsolution} \times 100

=55+45×100=10%= \frac{5}{5 + 45} \times 100 = 10\%