Which of the following relationships is false? A) As the activation energy of a

Question

Which of the following relationships is false? A) As the activation energy of a reaction increases, its rate decreases. B) For a first order reactant, halving the concentration will halve the rate. C) Increasing the concentration of a reactant increases the value of the rate constant. D) For a zero order reactant, tripling the concentration will have no effect on the rate. E) For a second order reactant, doubling the concentration will quadruple the rate. 34. Teriarybutylchloride undergoes substitution by hydroxide ion according to the following equation. Experimental evidence showed that the reaction obeys the rate law provided, Which of the following mechanisms is consistent with the observed rate law? (CH_3)_3CCI + OH^- rightarrow (CH_3)_3COH + CI^- Rate = k[(CH_3)_3CCI] A) Step 1: (CH_3)_3CCI rightarrow (CH_3)_3C^+ + CI^- Slow Step 2: (CH_3)C^+ + OH^- (CH_3)_3COH Fast B) Step 1: (CH_3)_3CCI + OH^- rightarrow (CH_3)_3C^+ + HOCI Slow Step 2: (CH_3)_3C^+ + HOCI (CH_3)_3COH + CI^- Fast C) (CH_3)_3CCI + OH^- rightarrow (CH_3)_3COH + CI^- D) Step 1: (CH_3)_3CCI (CH_3)_3C^+ + CI^- Fast Step 2: OH^- rightarrow H^+ + O2^- Slow Step 3: (CH_3)_3C^+ + O^2- + H^+ (CH_3)_3COH Fast E) Step 1: (CH_3)_3CCI + OH^- (CH_3)_3C^+ + HOCI Fast Step 2: (CH_3)_3C^+ + HOCI rightarrow (CH_3)_3COH + CI^- Slow

Explanation / Answer

33-A

34-A it is SN1 reaction and unimolecular reaction

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