Ammonia and oxygen react to form nitrogen monoxide and water, like this:
Also, a chemist finds that at a certain temperature the equilibrium mixture of ammonia, oxygen, nitrogen monoxide, and water has the following composition:
Compound pressure at equilibrium
NH_3 65.3 atm
O_2 7.79 atm
NO 12.1 atm
H_2O 65.8 atm
calculate the value of the equilibrium constant Kp for this reaction. Round your answer to 2 significant figures.
Kp=

Respuesta :

Answer: The value of the equilibrium constant Kp for this reaction is [tex]3.3\times 10^3[/tex]

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  

For the given balanced chemical reaction:

[tex]4NH_3(g)+5O_2(g)\rightarrow 4NO(g)+6H_2O(g)[/tex]

The expression for [tex]K_p[/tex] is written as:

[tex]K_p=\frac{[p_{NO}]^4\times [p_{H_2O}]^6}{[p_{NH_3}]^4\times [p_{O_2}]^5}[/tex]

[tex]K_p=\frac{(12.1)^4\times (65.8)^6}{(65.3)^4\times (7.79)^5}[/tex]

[tex]K_p=3.3\times 10^3[/tex]

The value of the equilibrium constant Kp for this reaction is [tex]3.3\times 10^3[/tex]