An excess of sodium hydroxide is treated with 3.3 L of dry hydrogen chloride gas measured at STP,producing sodium chloride and water.What is the mass of sodium chloride is formed?
A) 1.65 g
B) 17.2 g
C) 8.6 g
D) 14 g
E) 193 g

Question

Quizplus · Accepted Answer

The balanced chemical equation is:NaOH + HCl → NaCl + H2O1 mole of HCl reacts with 1 mole of NaOH to produce 1 mole of NaCl.At STP, 3.3 L of HCl gas is equal to 0.15 moles of HCl.Therefore, 0.15 moles of NaCl will be formed.The molar mass of NaCl is 58.44 g/mol.Therefore, the mass of NaCl formed is:0.15 moles NaCl × 58.44 g/mol NaCl = 8.6 g NaCl

An Excess of Sodium Hydroxide Is Treated with 3