Multiple Choice
The following reaction in aqueous solution was found to be first order in [OH-], first order in [C2H5Br], and inverse first order in Br-.
C2H5Br + OH- C2H5OH + Br-
Which one of the following mechanisms is consistent with the observed reaction order?
A) C2H5Br ![The following reaction in aqueous solution was found to be first order in [OH<sup>-</sup>], first order in [C<sub>2</sub>H<sub>5</sub>Br], and inverse first order in Br<sup>-</sup>. C<sub>2</sub>H<sub>5</sub>Br + OH<sup>-</sup> \rarr C<sub>2</sub>H<sub>5</sub>OH + Br<sup>-</sup> <sup> </sup> Which one of the following mechanisms is consistent with the observed reaction order? A) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>fast C<sub>2</sub>H<sub>5</sub><sup>+</sup> + OH<sup>-</sup> C<sub>2</sub>H<sub>5</sub>OH slow B) C<sub>2</sub>H<sub>5</sub>Br +H<sub>2</sub>O C<sub>2</sub>H<sub>5</sub>OH + H<sup>+</sup> + Br<sup>- </sup>slow H<sup>+</sup> + OH<sup>- </sup> <sup> </sup> H<sub>2</sub>O fast C) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>slow C<sub>2</sub>H<sub>5</sub><sup>+</sup><sub> </sub>+ OH<sup>- </sup> <sup> </sup> C<sub>2</sub>H<sub>5</sub>OH fast D) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>slow OH<sup>-</sup> + Br<sup>-</sup> HOBr fast HOBr + C<sub>2</sub>H<sub>5</sub><sup>+</sup> C<sub>2</sub>H<sub>5</sub>OH + Br<sup>- </sup>fast](https://d2lvgg3v3hfg70.cloudfront.net/TB3246/11ea7cbf_8f19_2a10_a2ab_7d23f5a661f7_TB3246_11.jpg)
C2H5+ + Br- fast C2H5+ + OH- ![The following reaction in aqueous solution was found to be first order in [OH<sup>-</sup>], first order in [C<sub>2</sub>H<sub>5</sub>Br], and inverse first order in Br<sup>-</sup>. C<sub>2</sub>H<sub>5</sub>Br + OH<sup>-</sup> \rarr C<sub>2</sub>H<sub>5</sub>OH + Br<sup>-</sup> <sup> </sup> Which one of the following mechanisms is consistent with the observed reaction order? A) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>fast C<sub>2</sub>H<sub>5</sub><sup>+</sup> + OH<sup>-</sup> C<sub>2</sub>H<sub>5</sub>OH slow B) C<sub>2</sub>H<sub>5</sub>Br +H<sub>2</sub>O C<sub>2</sub>H<sub>5</sub>OH + H<sup>+</sup> + Br<sup>- </sup>slow H<sup>+</sup> + OH<sup>- </sup> <sup> </sup> H<sub>2</sub>O fast C) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>slow C<sub>2</sub>H<sub>5</sub><sup>+</sup><sub> </sub>+ OH<sup>- </sup> <sup> </sup> C<sub>2</sub>H<sub>5</sub>OH fast D) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>slow OH<sup>-</sup> + Br<sup>-</sup> HOBr fast HOBr + C<sub>2</sub>H<sub>5</sub><sup>+</sup> C<sub>2</sub>H<sub>5</sub>OH + Br<sup>- </sup>fast](https://d2lvgg3v3hfg70.cloudfront.net/TB3246/11ea7cbf_8f19_2a11_a2ab_b128b8333021_TB3246_11.jpg)
C2H5OH slow
B) C2H5Br +H2O ![The following reaction in aqueous solution was found to be first order in [OH<sup>-</sup>], first order in [C<sub>2</sub>H<sub>5</sub>Br], and inverse first order in Br<sup>-</sup>. C<sub>2</sub>H<sub>5</sub>Br + OH<sup>-</sup> \rarr C<sub>2</sub>H<sub>5</sub>OH + Br<sup>-</sup> <sup> </sup> Which one of the following mechanisms is consistent with the observed reaction order? A) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>fast C<sub>2</sub>H<sub>5</sub><sup>+</sup> + OH<sup>-</sup> C<sub>2</sub>H<sub>5</sub>OH slow B) C<sub>2</sub>H<sub>5</sub>Br +H<sub>2</sub>O C<sub>2</sub>H<sub>5</sub>OH + H<sup>+</sup> + Br<sup>- </sup>slow H<sup>+</sup> + OH<sup>- </sup> <sup> </sup> H<sub>2</sub>O fast C) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>slow C<sub>2</sub>H<sub>5</sub><sup>+</sup><sub> </sub>+ OH<sup>- </sup> <sup> </sup> C<sub>2</sub>H<sub>5</sub>OH fast D) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>slow OH<sup>-</sup> + Br<sup>-</sup> HOBr fast HOBr + C<sub>2</sub>H<sub>5</sub><sup>+</sup> C<sub>2</sub>H<sub>5</sub>OH + Br<sup>- </sup>fast](https://d2lvgg3v3hfg70.cloudfront.net/TB3246/11ea7cbf_8f19_5022_a2ab_ad5efaaaa499_TB3246_11.jpg)
C2H5OH + H+ + Br- slow H+ + OH-
![The following reaction in aqueous solution was found to be first order in [OH<sup>-</sup>], first order in [C<sub>2</sub>H<sub>5</sub>Br], and inverse first order in Br<sup>-</sup>. C<sub>2</sub>H<sub>5</sub>Br + OH<sup>-</sup> \rarr C<sub>2</sub>H<sub>5</sub>OH + Br<sup>-</sup> <sup> </sup> Which one of the following mechanisms is consistent with the observed reaction order? A) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>fast C<sub>2</sub>H<sub>5</sub><sup>+</sup> + OH<sup>-</sup> C<sub>2</sub>H<sub>5</sub>OH slow B) C<sub>2</sub>H<sub>5</sub>Br +H<sub>2</sub>O C<sub>2</sub>H<sub>5</sub>OH + H<sup>+</sup> + Br<sup>- </sup>slow H<sup>+</sup> + OH<sup>- </sup> <sup> </sup> H<sub>2</sub>O fast C) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>slow C<sub>2</sub>H<sub>5</sub><sup>+</sup><sub> </sub>+ OH<sup>- </sup> <sup> </sup> C<sub>2</sub>H<sub>5</sub>OH fast D) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>slow OH<sup>-</sup> + Br<sup>-</sup> HOBr fast HOBr + C<sub>2</sub>H<sub>5</sub><sup>+</sup> C<sub>2</sub>H<sub>5</sub>OH + Br<sup>- </sup>fast](https://d2lvgg3v3hfg70.cloudfront.net/TB3246/11ea7cbf_8f19_5023_a2ab_578d0cefd2fa_TB3246_11.jpg)
H2O fast
C) C2H5Br ![The following reaction in aqueous solution was found to be first order in [OH<sup>-</sup>], first order in [C<sub>2</sub>H<sub>5</sub>Br], and inverse first order in Br<sup>-</sup>. C<sub>2</sub>H<sub>5</sub>Br + OH<sup>-</sup> \rarr C<sub>2</sub>H<sub>5</sub>OH + Br<sup>-</sup> <sup> </sup> Which one of the following mechanisms is consistent with the observed reaction order? A) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>fast C<sub>2</sub>H<sub>5</sub><sup>+</sup> + OH<sup>-</sup> C<sub>2</sub>H<sub>5</sub>OH slow B) C<sub>2</sub>H<sub>5</sub>Br +H<sub>2</sub>O C<sub>2</sub>H<sub>5</sub>OH + H<sup>+</sup> + Br<sup>- </sup>slow H<sup>+</sup> + OH<sup>- </sup> <sup> </sup> H<sub>2</sub>O fast C) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>slow C<sub>2</sub>H<sub>5</sub><sup>+</sup><sub> </sub>+ OH<sup>- </sup> <sup> </sup> C<sub>2</sub>H<sub>5</sub>OH fast D) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>slow OH<sup>-</sup> + Br<sup>-</sup> HOBr fast HOBr + C<sub>2</sub>H<sub>5</sub><sup>+</sup> C<sub>2</sub>H<sub>5</sub>OH + Br<sup>- </sup>fast](https://d2lvgg3v3hfg70.cloudfront.net/TB3246/11ea7cbf_8f19_5024_a2ab_37d171a09197_TB3246_11.jpg)
C2H5+ + Br- slow C2H5+ + OH-
![The following reaction in aqueous solution was found to be first order in [OH<sup>-</sup>], first order in [C<sub>2</sub>H<sub>5</sub>Br], and inverse first order in Br<sup>-</sup>. C<sub>2</sub>H<sub>5</sub>Br + OH<sup>-</sup> \rarr C<sub>2</sub>H<sub>5</sub>OH + Br<sup>-</sup> <sup> </sup> Which one of the following mechanisms is consistent with the observed reaction order? A) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>fast C<sub>2</sub>H<sub>5</sub><sup>+</sup> + OH<sup>-</sup> C<sub>2</sub>H<sub>5</sub>OH slow B) C<sub>2</sub>H<sub>5</sub>Br +H<sub>2</sub>O C<sub>2</sub>H<sub>5</sub>OH + H<sup>+</sup> + Br<sup>- </sup>slow H<sup>+</sup> + OH<sup>- </sup> <sup> </sup> H<sub>2</sub>O fast C) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>slow C<sub>2</sub>H<sub>5</sub><sup>+</sup><sub> </sub>+ OH<sup>- </sup> <sup> </sup> C<sub>2</sub>H<sub>5</sub>OH fast D) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>slow OH<sup>-</sup> + Br<sup>-</sup> HOBr fast HOBr + C<sub>2</sub>H<sub>5</sub><sup>+</sup> C<sub>2</sub>H<sub>5</sub>OH + Br<sup>- </sup>fast](https://d2lvgg3v3hfg70.cloudfront.net/TB3246/11ea7cbf_8f19_5025_a2ab_614555af09ba_TB3246_11.jpg)
C2H5OH fast
D) C2H5Br ![The following reaction in aqueous solution was found to be first order in [OH<sup>-</sup>], first order in [C<sub>2</sub>H<sub>5</sub>Br], and inverse first order in Br<sup>-</sup>. C<sub>2</sub>H<sub>5</sub>Br + OH<sup>-</sup> \rarr C<sub>2</sub>H<sub>5</sub>OH + Br<sup>-</sup> <sup> </sup> Which one of the following mechanisms is consistent with the observed reaction order? A) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>fast C<sub>2</sub>H<sub>5</sub><sup>+</sup> + OH<sup>-</sup> C<sub>2</sub>H<sub>5</sub>OH slow B) C<sub>2</sub>H<sub>5</sub>Br +H<sub>2</sub>O C<sub>2</sub>H<sub>5</sub>OH + H<sup>+</sup> + Br<sup>- </sup>slow H<sup>+</sup> + OH<sup>- </sup> <sup> </sup> H<sub>2</sub>O fast C) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>slow C<sub>2</sub>H<sub>5</sub><sup>+</sup><sub> </sub>+ OH<sup>- </sup> <sup> </sup> C<sub>2</sub>H<sub>5</sub>OH fast D) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>slow OH<sup>-</sup> + Br<sup>-</sup> HOBr fast HOBr + C<sub>2</sub>H<sub>5</sub><sup>+</sup> C<sub>2</sub>H<sub>5</sub>OH + Br<sup>- </sup>fast](https://d2lvgg3v3hfg70.cloudfront.net/TB3246/11ea7cbf_8f19_7736_a2ab_cf8134e8dc5f_TB3246_11.jpg)
C2H5+ + Br- slow OH- + Br- ![The following reaction in aqueous solution was found to be first order in [OH<sup>-</sup>], first order in [C<sub>2</sub>H<sub>5</sub>Br], and inverse first order in Br<sup>-</sup>. C<sub>2</sub>H<sub>5</sub>Br + OH<sup>-</sup> \rarr C<sub>2</sub>H<sub>5</sub>OH + Br<sup>-</sup> <sup> </sup> Which one of the following mechanisms is consistent with the observed reaction order? A) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>fast C<sub>2</sub>H<sub>5</sub><sup>+</sup> + OH<sup>-</sup> C<sub>2</sub>H<sub>5</sub>OH slow B) C<sub>2</sub>H<sub>5</sub>Br +H<sub>2</sub>O C<sub>2</sub>H<sub>5</sub>OH + H<sup>+</sup> + Br<sup>- </sup>slow H<sup>+</sup> + OH<sup>- </sup> <sup> </sup> H<sub>2</sub>O fast C) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>slow C<sub>2</sub>H<sub>5</sub><sup>+</sup><sub> </sub>+ OH<sup>- </sup> <sup> </sup> C<sub>2</sub>H<sub>5</sub>OH fast D) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>slow OH<sup>-</sup> + Br<sup>-</sup> HOBr fast HOBr + C<sub>2</sub>H<sub>5</sub><sup>+</sup> C<sub>2</sub>H<sub>5</sub>OH + Br<sup>- </sup>fast](https://d2lvgg3v3hfg70.cloudfront.net/TB3246/11ea7cbf_8f19_7737_a2ab_dbb44d186762_TB3246_11.jpg)
HOBr fast
HOBr + C2H5+ ![The following reaction in aqueous solution was found to be first order in [OH<sup>-</sup>], first order in [C<sub>2</sub>H<sub>5</sub>Br], and inverse first order in Br<sup>-</sup>. C<sub>2</sub>H<sub>5</sub>Br + OH<sup>-</sup> \rarr C<sub>2</sub>H<sub>5</sub>OH + Br<sup>-</sup> <sup> </sup> Which one of the following mechanisms is consistent with the observed reaction order? A) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>fast C<sub>2</sub>H<sub>5</sub><sup>+</sup> + OH<sup>-</sup> C<sub>2</sub>H<sub>5</sub>OH slow B) C<sub>2</sub>H<sub>5</sub>Br +H<sub>2</sub>O C<sub>2</sub>H<sub>5</sub>OH + H<sup>+</sup> + Br<sup>- </sup>slow H<sup>+</sup> + OH<sup>- </sup> <sup> </sup> H<sub>2</sub>O fast C) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>slow C<sub>2</sub>H<sub>5</sub><sup>+</sup><sub> </sub>+ OH<sup>- </sup> <sup> </sup> C<sub>2</sub>H<sub>5</sub>OH fast D) C<sub>2</sub>H<sub>5</sub>Br C<sub>2</sub>H<sub>5</sub><sup>+</sup> + Br<sup>- </sup>slow OH<sup>-</sup> + Br<sup>-</sup> HOBr fast HOBr + C<sub>2</sub>H<sub>5</sub><sup>+</sup> C<sub>2</sub>H<sub>5</sub>OH + Br<sup>- </sup>fast](https://d2lvgg3v3hfg70.cloudfront.net/TB3246/11ea7cbf_8f19_7738_a2ab_fb1c52515212_TB3246_11.jpg)
C2H5OH + Br- fast
Correct Answer:
Verified
Correct Answer:
Verified
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