Question

In a chemical reaction,the rate constant for the backward reaction is 7.5×10⁻⁴ and the equilibrium constant is

1.5 the rate constant for forward reaction is:

A 5×10⁻⁴
B 1.125×10⁻³
C 9×10⁻⁴
D 2×10⁻³

Answer 1

The rate constant for the forward reaction is 1.125x10^-3. The rate constant for the forward reaction is determined by multiplying the equilibrium constant, which is 1.5 times the forward rate constant, by the rate constant for the reverse reaction.

Step-by-step explanation:

The equilibrium constant is equal to the rate constant for the forward reaction divided by the rate constant for the reverse reaction. In this case, the equilibrium constant is given as 1.5 and the rate constant for the reverse reaction is 7.5x10-4. Therefore, to find the rate constant for the forward reaction, we can rearrange the equation:

Equilibrium Constant = Rate constant for forward reaction / Rate constant for reverse reaction

1.5 = Rate constant for forward reaction / 7.5x10-4

Simplifying the equation, we can multiply both sides by 7.5x10-4:

1.5 x 7.5x10-4 = Rate constant for forward reaction

1.125x10-3 = Rate constant for forward reaction

Therefore, the rate constant for the forward reaction is 1.125x10-3, which is option B.