Magnesium metal reacts completely with excess aqueous HCl
CHEMISTRY · Subjective · A Level · Chemistry · Amount of substance · Amount of substance
Problem
Magnesium metal reacts completely with excess aqueous HCl, producing H2 gas that is collected over water at 24.0 °C. The collected gas occupies 236 mL at a total pressure of 755 mm Hg; the vapor pressure of water at this temperature is 22.4 mm Hg. The dry hydrogen is then burned in oxygen to form liquid water. Determine the mass of water (in grams) produced.