Write the equilibrium constant expression K_eq for the following balanced chemical equations: 1) C3H8(g) + 5 O2(g) ⇌ 3 CO2(g) + 4 H2O(g); 2) 2 NO(g) + Br2(g) ⇌ 2 NOBr(g); 3) 2 NO(g... Write the equilibrium constant expression K_eq for the following balanced chemical equations: 1) C3H8(g) + 5 O2(g) ⇌ 3 CO2(g) + 4 H2O(g); 2) 2 NO(g) + Br2(g) ⇌ 2 NOBr(g); 3) 2 NO(g) ⇌ N2(g) + O2(g).
Understand the Problem
The question is asking to write the equilibrium constant expression for three given balanced chemical equations. This involves identifying the products and reactants of each equation and applying the formula for the equilibrium constant, K_eq.
Answer
1) Keq = [CO2]^3[H2O]^4/[C3H8][O2]^5; 2) Keq = [NOBr]^2/[NO]^2[Br2]; 3) Keq = [N2][O2]/[NO]^2
The equilibrium constant expressions are: 1) Keq = [CO2]^3 [H2O]^4 / [C3H8] [O2]^5; 2) Keq = [NOBr]^2 / ([NO]^2 [Br2]); 3) Keq = [N2][O2] / [NO]^2.
Answer for screen readers
The equilibrium constant expressions are: 1) Keq = [CO2]^3 [H2O]^4 / [C3H8] [O2]^5; 2) Keq = [NOBr]^2 / ([NO]^2 [Br2]); 3) Keq = [N2][O2] / [NO]^2.
More Information
The equilibrium constant expression (Keq) relates the concentrations of reactants and products at equilibrium. Large Keq values indicate products are favored, while small values indicate reactants are favored.
Tips
A common mistake is to not use the coefficients as exponents. Make sure each concentration is raised to the power of its coefficient.
Sources
- CK-12: Equilibrium Constant Expressions - ck12.org
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