Question

Liquid water can be split into hydrogen gas and oxygen gas (ΔH = 285.8 kJ/mol) by applying energy through an electric current. In this experiment, 13.31 kJ of energy are applied to 12.3 grams of water in a sealed reaction vessel whose volume is 4.56 L and whose temperature is 311.15 K 

Note: At 311.15 K, the vapor pressure of water is 0.0654 atm.

 (a) Is this reaction exothermic or endothermic?

 (b) Write a balanced chemical equation for this reaction. Be sure to include all phase symbols and write in energy as either a product or a reactant.

 (c) Determine the theoretical yield in moles of hydrogen gas.

 (d) Determine the theoretical yield in moles of oxygen gas. 

Answer 1