Free Version
Moderate

# Enthalpy Changes for a System

APCHEM-JGQUFL

The total enthalpy change for the reaction $A \rightarrow B$ is represented by $ΔH_T$ . The reaction can be broken down into a series of steps as shown in the following diagram.

Which of the following is the correct relationship among the enthalpies for the reaction?

A

$ΔH_T- ΔH_1- ΔH_2- ΔH_3= 0$

B

$ΔH_T+ ΔH_1+ ΔH_2+ ΔH_3= 0$

C

$ΔH_T= ΔH_3- (ΔH_2+ ΔH_1)$

D

$ΔH_T= ΔH_2- (ΔH_3+ ΔH_1)$