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, enter 1nh4hs(s) ↔ nh3(g) + h2s(g)

The expression for is written below.

Explanation:

Equilibrium constant in terms of partial pressure is defined as the ratio of partial pressures of the products and the reactants each raised to the power their stoichiometric ratios. It is expressed as

For a general chemical reaction:

The expression for is written as:

The partial pressure for solids and liquids are taken as 1.

For the given chemical equation:

The expression for for the following equation is:

The partial pressure of will be 1 because it is solid.

So, the expression for now becomes:

Hence, the expression for is written above.

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