Question

A 3.60−g sample of a salt dissolves in 7.70 g of water to give a saturated solution at 21°C. What is the solubility (in g salt/100 g of H2O) of the salt?

Answer 1

The solubility of the salt is

46.75g salt/100g of H2O

Step-by-step explanation:

If 7.70g of water can dissolve 3.60g at 21°C

That is 1.0g of water can dissolve (3.6÷7.7) grams of salt, that is 0.4675_g of salt at 21°C or 100 grams of water can dissolve 100×0.4675 = 46.75g

The solubility of the salt is

46.75g salt/100g of H2O