Question

Write the expression for the equilibrium constant Kp for the following reaction. Enclose pressures in parentheses and do NOT write the chemical formula as a subscript. For example, enter (PNH3 )2 as (P NH3)2. If either the numerator or denominator is 1, please enter 1 2 MoO3(s) ↔ 2 MoO2(s) + O2(g)

Answer 1

Answer: $K_p={(p_{O_2})}$

Explanation:

Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as $K$

$K_p$ is the constant of a certain reaction at equilibrium for gaseous reactants and products.

For the given chemical reaction:

$MoO_3(s)\rightleftharpoons 2MoO_2(s)+O_2(g)$

The expression of  for above equation follows:

$K_p={(p_{O_2})}$

As solids do not exert pressure, $MoO_3$ and $MoO_2$  are not involved.