# Answer to Question #55574 in General Chemistry for Nickolai

Question #55574

The rate constant for this zero-order reaction is 0.0380 M·s–1 at 300 °C.

A --> Products

How long (in seconds) would it take for the concentration of A to decrease from 0.920 M to 0.340 M?

A --> Products

How long (in seconds) would it take for the concentration of A to decrease from 0.920 M to 0.340 M?

Expert's answer

Zero order reaction equation:

[A] = [A]0 – kt;

[A]

t = ([A]

Answer: 15.3 s

[A] = [A]0 – kt;

[A]

_{0}– [A] = kt;t = ([A]

_{0}– [A])/k = (0.920 M – 0.340 M)/(0.0380 M s^{-1}) = 15.3 sAnswer: 15.3 s

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