Question

The solubility of CaCl2 in water is 25g per 50 mL of H2O. How many grams of CaCl2 will dissolved to form a saturated solution in 10 mL of water?

a. 150g
b. 5g
c. 50g
d. 0.5g

Answer 1

Answer: option B. 5g

Explanation:

50mL of H2O dissolves 25g of CaCl2.

Therefore, 10mL of H2O will dissolve Xg of CaCl2 i.e

Xg of CaCl2 = (10 x 25) /50 = 5g