After ve half-life periods for a rst order reaction, what fraction of reactant remains ?
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State a condition under which a bimolecular reaction is kinetically rst order reaction.
A bimolecular reaction becomes rst order reaction when one of the reactants is in excess.
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For a reaction R=> P, the rate becomes 2 times when the concentration of the reactant A is increased 4 times. What is the order of reaction ?
r = k(a)n => 2r = k(4a)n =>2 = 4n => n = 0.5
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For a rst order reaction time taken for half of the reaction to complete is t 1 and 3/4 of the reaction
t 2 = 2t 1 because for 3/4th of the reaction to complete time required is equal to two half lives
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A first order reaction is 75% completed in 60 min. Find the half life of this reaction
The answer is 30 mins
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The following data were obtained during the rst order thermal decomposition of N2 O5 at constant volume :
. 4.98 x 10-4 sec-1
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State a condition under which a bimolecular reaction is kinetically rst order reaction.
1 Answers
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A first order reaction is 75% completed in 60 min. Find the half life of this reaction.
The answer is 30 mins.
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The half life period of a FIrst order reaction is 60 min. What % will be left after 240 mins. ?
The answer is 6.25%
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The following data were obtained during the rst order thermal decomposition of N2O5 at constant volume :
4.98 x 10-4 sec-1
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A reaction is of first order in reactant A and of second order in reactant B.
According to the given reaction: Rate = k [A] [B]2 (i) When the concentration of reactant ‘B’ is increased three times the rate of reaction becomes 9 times. i.e., Rate = k [A]...
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