Practice question
Question
What is the mass of AgNO₃ produced when 14.3 g of AgCl reacts with excess HNO₃? (Molar masses: AgCl = 143.5 g/mol, AgNO₃ = 170 g/mol)
Explanation
Reaction: AgCl + HNO₃ → AgNO₃ + HCl. Moles of AgCl = 14.3/143.5 ≈ 0.0997 mol. 1 mol AgCl produces 1 mol AgNO₃; mass = 0.0997 × 170 ≈ 16.95 g.