Question

what is meant by equilibrium constant and how does it is determined experimentally

Answer 1

equilibrium means posture...i think so

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Answer 2

The reaction quotient value obtained from the expression for chemical equilibrium is the equilibrium constant.

• It is influenced by temperature and ionic strength and is unaffected by the amounts of reactants and products in a solution.
• Whether a chemical reaction involves homogeneous equilibrium or heterogeneous equilibrium affects the calculation and understanding of the equilibrium constant.
• At homogeneous equilibrium, all of the products and reactants are in the same phase. For instance, all species might be gases or everything might be a liquid.
• Reactions that reach heterogeneous equilibrium have more than one phase.
• Typically, only two phases—such as liquids and gases or solids and liquids—are present.
• The expression for equilibrium does not include solids.
• For the following chemical reaction,

          aA(g) + bB(g) ↔ cC(g) + dD(g)

Calculating the equilibrium constant Kc with molarity and coefficients:

$K^{c} =[C]^{c} [D]^{d} /[A]^{a} [B]^{b}$

[A], [B], [C], [D] etc. are the concentrations of A, B, C, D (molarity);

a, b, c, d, etc. are the coefficients in the balanced chemical equation.

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