Consider the given plot of enthalpy of the following reaction between A and B . A + B → C + D .…

Consider the given plot of enthalpy of the following reaction between $\mathrm{A}$ and $\mathrm{B}.$
$\mathrm{A}+\mathrm{B}\to \mathrm{C}+\mathrm{D}.$ Identify the incorrect statement.

1. Formation of $\mathrm{A}$ and $\mathrm{B}$ from $\mathrm{C}$ has highest enthalpy of activation.
2. $\mathrm{D}$ is kinetically stable product.
3. $\mathrm{C}$ is the thermodynamically stable product.
4. Activation enthalpy to form $\mathrm{C}$ is $5\mathrm{ }\mathrm{k}\mathrm{J}\mathrm{ }\mathrm{m}\mathrm{o}{\mathrm{l}}^{-1}$ less than that to form $\mathrm{D}.$

Solution

$\mathrm{A}+\mathrm{B}\to \mathrm{C}+\mathrm{D}$

Activation enthalpy for $\mathrm{C}=20-0=20\mathrm{ }\mathrm{k}\mathrm{J}/\mathrm{m}\mathrm{o}\mathrm{l}$
Activation enthalpy for $\mathrm{D}=15-5=10\mathrm{ }\mathrm{k}\mathrm{J}/\mathrm{m}\mathrm{o}\mathrm{l}$

Asked in: JEE Main 2019 (09 Apr Shift 2)

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