the integrated rate laws for zero, first, second reaction was 0.100 M after 100s

Question

the integrated rate laws for zero, first, second reaction was 0.100 M after 100s and 4.00*10^-2 M after 390 ?offset next&assignmentProblemID; 80071304 Signed in as Jasmine Davis previous l 9 of 25 he reactant concentration in a zero-order reaction was 0.100 Mafter 100 s and 4.00x10 2 Mafter 390 s. What is the rate constant for this reaction xpress your answer with the appropriate units. Indicate the multiplication of units, asnecessary, explicitly either with a multiplication do a dash. Value Units Submit Hints My Answers Give Up Review Part What was the initial reactant concentration for the reaction described in Part A? multiplication de xpress your answer with the appropriate units. Indicate the multiplication of units, as necessary, explicitly either with a a dash. Ea

Explanation / Answer

The rate law for a zero order reaction is :

[A]o - [A] = kt

[A]o - [0.1] = k *100 sec   .........eqn 1

[A]o - [0.04] = k*390 sec   .............eqn 2

Solve eqn 1 and 2 to get the value to rate constant k and initial concentration

k =2.07*10^-4 M /s

Initial concentration = 0.121 M

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