Question

For the reaction $CO ( g )+\frac{1}{2} O _{2}( g ) \rightarrow CO _{2}( g )$ Which one of the statement is correct at constant $T$ and $P$ ?

• A. $\Delta H =\Delta E$
• B. $\Delta H
• C. $\Delta H >\Delta E$
• D. $\Delta H$ is independent of physical state of the reactants

Answer 1

Answer: (B)

$\Delta H

Answer 2

$\Delta n=-\frac{1}{2} ; \Delta H=\Delta E-\frac{1}{2} R T ;$
$\Rightarrow \Delta E>\Delta H$