For the reaction 2 A + 4 B → 2 C + 4 D, what is the absolute magnitude of the rate of change for [B] when [C] is increasing at 2.0 M/s?

Answer 1

-1/2 dA/dt = -1/4 dB/dt = 1/2 dC/dt = 1/4 dD/dt

-1/4 dB/dt = 1/2 dC/dt

1/4 dB/dt = 1/2 x 2.0 M/s

1/4 dB/dt = 1.0 M/s

dB/dt = 4.0 M/s