Question

4. Calculate how grams of compound X would dissolve in 178 mL of water if it has a solubility of 0.375 g/100 g H2O. (2 pts)

Answer 1

Solubility of compound x is 0.375 gm/100 gm H_2 O i.e 100 gm H_2 O dissolves 0.375 gm of compound Now given volume of water = 178 ml and density of water = 1 gm/ml so mass of water = (volume) times (density) = 178 times 1 = 178 gm now since 100 gm of H_2 O dissolves 0.375 gm so 178 gm H_2 O will dissolve 0.375/100 times 178 = 0.67 gm So 0.67 gm compound x would dissolve in 178 ml of water