Question

15gms of a saturated solution of sodium nitrate at 20.C when evaporated at dryness leaves a solid residue of 60g calculate the solubility of sodium nitrate​

Answer 1

Answer:

43 grams

Hence, when a saturated solution of sodium nitrate at 30°C is left to cool, then 43 grams of solid sodium nitrate will separate out.

Explanation:

Answer 2

Answer:

weight of salt = 90 gram,

solubility = 50

sing formula

solubility of solute =

weightofsolventinsaturatedsolution

weightofsoluteinsaturatedsolution

×100

or 50=

weightofsolventinsaturatedsolutio

90gm

×100

so weight of solvent in saturated solution =

50

90gm

×100=180gm

Hence 180 gm of water is required to prepare a saturated solution.