Question

Solubility of KNO3 at 313K is 62g. What mass of KNO3 would be needed to produce a saturated

solution of KNO3 is 50g of water at 313K?​

Answer 1

$\bold { \red{EXPLANATION - }}$

GIVEN -

Solubility of KNO3 at 313K is 62g.

SOLUTION -

$Solubility \: of \: potassium \: nitrate \: at \: 313K \: \\ = \frac{62}{100}$

100 g of water contains potassium nitrate = 62 g

$50 g \: of \: water \: contains \: potassium \: nitrate \\ = \frac{62}{100} \times 50 = 31g$

Thus, 31 g potassium nitrate would be needed to produce a saturated solution of potassium nitrate in 50 g of water at 313 K.