Question

Im kinda confused on the imagine below, its just jibberish to me

Answer 1

1) Write the chemical equations.

1.1-The chemical equation result.

`A+B\rightarrow C`

1.2-The chemical equation steps.

`2A+B\rightarrow D\text{ }(\Delta H_1^0)`
`C+A\rightarrow D\text{ }(\Delta H_2^0)`

2) Invert the second step.

`D\rightarrow C+A\text{ }(-\Delta H_2^0)`

3) Sum up the equation steps.

`\begin{gathered} 2A+B\rightarrow D \\ D\rightarrow C+A \end{gathered}`
`A+B\rightarrow C`

Enthalpy change

`\Delta H^0=\Delta H_1^0-\Delta H_2^0`

Option C.

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