Hydrogen gas can be produced from the reaction of calcium

Last updated: 8/5/2022

Hydrogen gas can be produced from the reaction of calcium hydride and water: CaH₂ (s) + 2 H₂O (l) -> 2 H₂(g) + Ca(OH)2 (aq) How many grams of calcium hydride are needed to produce 5.34 L of hydrogen gas collected over water at 22.0 °C and a total pressure of 769.0 torr? The vapor pressure of water at 22.0 °C is 19.827 torr. R = 0.08206 L atm/ mol K Do NOT include units in your answer. If you round during your calculation, be sure to keep at least three (3) decimal places. Report your answer to one (1) decimal place.