According to the following reaction,how much energy is evolved during the reaction of 0.111 mol B₂H₆ and 0.252 mol Cl₂(Both gases are initially at STP) ? The molar mass of B₂H₆is 27.67 g/mol.
B₂H₆(g) + 6 Cl₂(g) → 2 BCl₃(g) + 6 HCl(g) ΔH°_rxn= -1396 kJ

Question

Quizplus · Accepted Answer

The reaction is limited by the amount of B2H6, which is 0.111 mol. The reaction releases 1396 kJ per mole of B2H6. Therefore, the energy evolved is 0.111 mol * 1396 kJ/mol = 154.956 kJ, which rounds to 156 kJ.

According to the Following Reaction,how Much Energy Is Evolved During