The Δ Hrxn for the reaction A + B → C is 11 kJ. What is...

Question

Question

The Δ H_rxn for the reaction A + B → C is 11 kJ.

What is ΔH_rxn for the reaction 3A + 3B → 3C in kJ?

Answer 1

Answer #1

$\Delta$ H rxn for A + B ---> C is 11 kJ

When the reaction is multiplied by 3, 3 A + 3 B ----> 3 C

3 moles of A and B are reacting. So the heat of reaction is also 3 times the original value.

Hence $\Delta$ Hrxn for 3 A + 3 B ----> 3 C is equal to 3 * 11 = 33 kJ

Answer 2

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