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Write short note of Half-time of a reaction. |
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Answer» Half life period:- Time taken to complete half portion of the first order reaction (t1/2) is called half life period. It is denoted t1/2 We know that t = 2.303/t log{a}/{a - x} Here a is the amount of the substance initially present and x is the amount that has reacted in time 'k'. In half life time (t1/2), a will be reduced to a/2(x = a/2) ∴ Half life period (t1/2) = 2.303/k log{a}/{a - (a/2)} = 2.303/k log2 = 2.303/k x 0.3010 ∴ t1/2 = 0.693/k |
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