Question

At high temperature, the following reaction occurs

$4CuO\left(s\right)\rightleftharpoons 2C{u}_{2}O\left(s\right)+O_2\left(g\right)$

Consider the following statements regarding reaction

$1.$ $K_p=p_{O_2}$

$2.$ $K_p$ depends upon the amounts of CuO and $C{u}_{2}O$

$3.$ $K_p<<K_c$

$4.$ $K_p>K_c$

Of the statements

• A. 1 and 2 are correct
• B. 1, 2 and 3 are correct
• C. 1 and 4 are correct
• D. 2 and 3 are correct

Answer 1

Answer: (C)

$K_p=p_{O_2}$ is correct.

$\left[O_2\left(g\right)\right]\propto p_{O_2}$

$K_p=K_c(RT{)}^{\Delta n_g}$

$\Delta n_g=$ Number of mol gaseous (Products - Reactants)

Here $\Delta n_g=1$

So $K_p>K_c$