Given the balanced equation and the equilibrium concentrations shown: N2 + 3H2=>2NH3
Equilibrium Concentrations:
N2: 9.76 M
H2: 6.52 M
NH3: 8.62 M
What is the value of K?

The value of K is 0.027.

Explanation:

Chemical equilibrium is a state of a reversible chemical system in which no changes are observed as time passes, despite the fact that the substances present continue to react with each other. That is, the chemical equilibrium is established when there are two opposite reactions that take place simultaneously at the same speed.

The Law of Mass Action says that the product of the equilibrium concentrations of the products raised to their respective stoichiometric coefficients, divided by the product of the concentrations of the reactants in the equilibrium raised to their respective stoichiometric coefficients, is a constant for each temperature, called the equilibrium constant Kc. So, being:

aA + bB ⇄ cC + dD

Then:

In this case, the reaction is:

N₂ + 3 H₂ ⇒ 2 NH₃

So, the equilibrium constant is:

Being:

Replacing:

Solving

Kc= 0.027

The value of K is 0.027.

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c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.