passwella.
Menu

JAMB Chemistry 2008 Question 16

Question 16

Solubility and Solutions

117.0g of sodium chloride was dissolved in 1.0dm3 of distilled water at 25°C. Determine the solubility in mol dm−3 of sodium chloride at that temperature. [Na = 23, Cl = 35.5]

  1. A.1.0
  2. B.2.0
  3. C.3.0
  4. D.4.0
Show the answer and explanation

Answer: B (2.0)

Explanation

Molar mass of NaCl = 58.5 g. 117.0 ÷ 58.5 = 2.0 mol in 1.0 dm3, so 2.0 mol dm−3.