A solution contains 20 g of sodium chloride in `95 cm^(3)` solution. The density of solution is `1.25 "g cm"^(-3)`. What is the mass percent of NaCl ?

Answer

`16.84 %`

Explanation

Density of NaCl solution `= 1.25 "g cm"^(-3)` , Volume of solution `= 95 cm^(3)`
Mass of solution = volume `xx` density `= ("95 cm"^(3))xx("1.25 g cm"^(-3))=118.75`g
Mass percent of NaCl `= ("Mass of NaCl")/("Mass of solution")xx100`
`=((20g))/((118.75g))xx100=16.84%`.