JEE Main Chemistry question
A reaction was observed for 15 days and the percentage of the reactant remaining after the days indicated was recorded in the following table.
| Time (days) | % Reactant remaining | |---|---| | 0 | 100 | | 2 | 50 | | 4 | 39 | | 6 | 25 | | 8 | 21 | | 10 | 18 | | 12 | 15 | | 14 | 12.5 | | 15 | 10 |
Which one of the following best describes the order and the half-life of the reaction? [Kerala CEE 2009]
Answer: (C)
Solution
Tracking the concentration halving , the time taken doubles at each step ( days), i.e. the half-life itself keeps doubling as
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