Question

In a $7.0L$ evacuated chamber, $0.50mol$ $H_2$ and $0.50mol$ $I_2$ react at ${427}^{o}C$
$H_2\left(g\right)+I_2\left(g\right)\rightleftharpoons 2HI\left(g\right)$. At the given temperature, $K_c=49$ for the reaction
What is the value of $K_p$?

• A. $7$
• B. $49$
• C. $24.5$
• D. None of these

Answer 1

Answer: (B)

$49$

$H_2+I_2\rightleftharpoons 2HI$

$K_C=49$ $\Delta ng=2-2=0$

as $K_P=K_C(RT{)}^{\Delta ng}$

$\therefore K_P=K_C$

$\therefore K_P=49$