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  4. In the reaction, H2(g)+I2(g) arrow 2 H I(g) . Which of the following is correct?

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Q. In the reaction, $H_{2}(g)+I_{2}(g) \rightarrow 2 H I(g) .$ Which of the following is correct?

Uttarkhand PMTUttarkhand PMT 2004

Solution:

For equation
$H_{2}(g)+I_{2}(g) \rightarrow 2 H I$
the value of $\Delta n=2-(1+1)=0$
Hence, By using formulae
$K_{p}=K_{c}(R T)^{\Delta n} $
$K_{p}=K_{c}(R T)^{0} $
$K_{p}=K_{c}$