The Half-Life of a First-Order Reaction Is 13 Min

question 72

Multiple Choice

The half-life of a first-order reaction is 13 min. If the initial concentration of reactant is 0.085 M, it takes ________ min for it to decrease to 0.055 M.

• A)8.2
• B)11
• C)3.6
• D)0.048
• E)8.4

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