Consider the following reaction 8A(g) + 5B(g) → 8C(g) + 6D(g)
If [C] is increasing at the rate of 4.0 mol L^-1s^-1, at what rate is [B] changing?

Question

Consider the following reaction 8A(g) + 5B(g) → 8C(g) + 6D(g) If [C] is increasing at the rate of 4.0 mol L^-1s^-1, at what rate is [B] changing?

Quizplus · Accepted Answer

Using the coefficients in the balanced equation, we can determine the mole ratio of B to C as 5/8. Therefore, the rate of change of [B] can be calculated as follows:
(rate of change of [B]) = (rate of change of [C]) x (mole ratio of B to C)
(rate of change of [B]) = (4.0 mol L^-1 s^-1) x (5/8)
(rate of change of [B]) = -2.5 mol L^-1 s^-1 (Note the negative sign indicates that [B] is decreasing)

Consider the Following Reaction 8A(g) + 5B(g) → 8C(g)