Question

The 25mL of a 0.15M solution of lead nitrate, Pb(NO₃)₂, reacts with all the aluminium sulphate, Al₂(SO₄)₃, present in 20mL of solution. What is the molar concentration of the solution of Al₂(SO₄)₃? 3Pb(NO₃)₂ + Al₂(SO₄)₃ → 3PbSO₄ + 2Al(NO₃)₃

• A. \(6.25\times10^{-2}\,\text{M}\)
• B. \(2.421\times10^{-2}\,\text{M}\)
• C. \(0.1875\,\text{M}\)
• D. None of these

Hint:

Always use balanced equations to relate reacting moles.

Answer 1

The Correct Option is A