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GUJCET 2011 Chemistry Solved Paper

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Question : 12

Total: 40

For a First order reaction, the initial concentration of a reactant is 0.05M. After 45 minutes it is decreased by 0.015M. Calculate half reaction time. (t1∕2)

87.42‌min.
25.90‌min.
78.72‌min.
77.20‌min.

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