Calcium hydride (CaH2, molar mass 42.10 g/mol) reacts with w…
Calcium hydride (CaH2, molar mass 42.10 g/mol) reacts with water to form hydrogen gas. How many grams of CaH2 are needed to generate 48.0 L of H2 gas at a pressure of 0.888 atm and a temperature of 32°C.? (R = 0.08206 L·atm/mol·K) CaH2 (s) + 2H2O (l) → Ca(OH)2 (aq) + 2H2 (g)