Question

$- 26.4$ of combustion of isobutylene is $- 94.0$. The value of $+ 26.4kcal$ is .

• A. $- 67.6kcal$
• B. $- 120.6kcal$
• C. $+ 52.8kcal$
• D. $NH_{4}OH$

Answer 1

Answer: (D)

$NH_{4}OH$

Answer 2

$NaOH$

$CH_{3}COOH$ (i.e., negative)

we know that $NaOH$

$3O_{2} \rightarrow 2O_{3}$ ($\Delta H$

$NaOH$