Examine experimental data Consider a second-order reaction in which reactant A d

Question

Examine experimental data

Consider a second-order reaction in which reactant A decomposes according to the chemical equation 2Aproducts.The data given below is the time, in minutes, and the corresponding change in the concentration of reactant A for this reaction.

Part C

Part complete

For a second-order reaction, the rate constant k is the slope of the graph of 1[A] versus t. Based on this information and the data given, calculate the rate constant k for the reaction.

Express your answer in M1min1 to three significant figures.

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Significant Figures Feedback: Your answer 3.091002 = 3.09×102M1min1 was either rounded differently or used a different number of significant figures than required for this part.

Part D

Based on the data given and a rate constant of 0.031 M1min1, calculate the time at which the concentration of reactant A will be 0.100 M .

Express your answer in minutes to two significant figures.

Can someone help me with part D please?

Explanation / Answer

initial concentration [Ao] = 0.500 M

after t time cocnetration = [At] = 0.100 M

rate constant = k = 0.031 M1min1

for second order reaction formula

t = 1/ k * [1 / [At] - 1 / [Ao]

t = 1/ 0.031 * [1 / 0.100 - 1/ 0.500]

t = 258 min

time = 2.6 x 10^2 min

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