Given the following generic equation,2 A + 3B → A₂B₃ △H rxn = +444 kJ,if you completely reacted 1 mole of compound A,the amount of heat absorbed would be 222 kJ.

Question

Quizplus · Accepted Answer

The heat absorbed is equal to the number of moles of A reacted multiplied by the enthalpy change of the reaction. In this case, 1 mole of A is reacted, so the heat absorbed is 1 mole * 444 kJ/mole = 444 kJ. However, the question states that the heat absorbed is 222 kJ, which is half of the expected value. This means that only half of the A molecules reacted, so the answer is true.

Given the Following Generic Equation,2 a + 3B → A2B3

Given the Following Generic Equation,2 a + 3B → A₂B₃