What is the value of the equilibrium constant Kc for the reaction A + B ⇌ C + D
Practice Questions
Q1
What is the value of the equilibrium constant Kc for the reaction A + B ⇌ C + D at 25°C if the concentrations are [A]=0.1 M, [B]=0.2 M, [C]=0.3 M, [D]=0.4 M?
0.5
1.0
2.0
4.0
Questions & Step-by-Step Solutions
What is the value of the equilibrium constant Kc for the reaction A + B ⇌ C + D at 25°C if the concentrations are [A]=0.1 M, [B]=0.2 M, [C]=0.3 M, [D]=0.4 M?
Step 1: Write down the balanced chemical equation: A + B ⇌ C + D.
Step 2: Identify the concentrations of each substance: [A] = 0.1 M, [B] = 0.2 M, [C] = 0.3 M, [D] = 0.4 M.
Step 3: Write the formula for the equilibrium constant Kc: Kc = ([C][D]) / ([A][B]).
Step 4: Substitute the concentrations into the formula: Kc = (0.3 * 0.4) / (0.1 * 0.2).
Step 5: Calculate the numerator: 0.3 * 0.4 = 0.12.
Step 6: Calculate the denominator: 0.1 * 0.2 = 0.02.
Step 7: Divide the numerator by the denominator: Kc = 0.12 / 0.02.
