If 0.24g of the salt was dissolved in 100 cm3
then Xg of the salt will be dissolved in 1000 cm3 (1 dm3
⇒ 0.24 = 100 cm3
X = 1000 cm3
Solubility of salt, X (gdm−3) = 0.24×1000100
= 2.40 gdm−3