Question

Maximum of 9.72 g of potassium chloride dissolves in 30 g of water at ${70}^{\circ }$C. The solubility of potassium chloride at ${70}^{\circ }C$ is:

• A. 3.24 g
• B. 32.4 g
• C. 0.324 g
• D. 33.4 g

Answer 1

Answer: (B)

32.4 g

Solubility is defined as solubility of different substances in grams per 100 gm of water.
30 gm of water dissolves 9.72 g of $KCl$.
So, 100gm will dissolve in $9.72\times 100/30=32.4$ gm.