How long (in seconds) would it take for the concentration of A to decrease from 0.680...

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How long (in seconds) would it take for the concentration of A to decrease from 0.680 M to 0.200 M?

How long (in seconds) would it take for the

science chemistry

Answer 1

Answer #1

For first order reactions

[A] = [A0]*exp(-k*t)

if K = 0.18

how long in s for 0.68 to 0.20

[A] = [A0]*exp(-k*t)

0.20 = 0.68*exp(-0.18*t)

t = 6.79 s

Answer 2

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