The reactant concentration in a first-order reaction was 5.10*10^-2 M after 30.0

Question

The reactant concentration in a first-order reaction was 5.10*10^-2 M after 30.0 second and 1.00*10^ M after 30.0 second and 1.00*10^ M after 95.0 second. What is the rate constant for this reaction? Express your answer with the appropriate units. The reaction concentration in a second-order reaction was 0.590 M after 240 second and 3.30*10^-2 M after 705 second. What is the rate constant for this reaction? Express your answer with the appropriate units. Include an asterisk to indicate a compound unit with multiplication, for example write a Newton-meter as N*m.

Explanation / Answer

Part C

K = 1/(t2-t1)ln((a-x1)/(a-x2))

    = (1/(95-30))ln(0.051/0.01)

= 0.025 s-1.

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