Initial Concentrations, | M | Initial rate of disappearance of \[B{{r}_{2}},\]\[M{{s}^{-1}}\] |
\[[C{{H}_{3}}COC{{H}_{3}}]\] | \[[B{{r}_{2}}]\] \[[{{H}^{+}}]\] | |
0.30 | 0.05 0.05 | \[5.7\times {{10}^{-5}}\] |
0.30 | 0.10 0.05 | \[5.7\times {{10}^{-5}}\] |
0.30 | 0.10 0.10 | \[1.2\times {{10}^{-4}}\] |
0.40 | 0.05 0.20 | \[31\times {{10}^{-4}}\] |
A) Rate \[=k[C{{H}_{3}}COC{{H}_{3}}][{{H}^{+}}]\]
B) Rate\[=k[C{{H}_{3}}COC{{H}_{3}}][B{{r}_{2}}]\]
C) Rate\[=k[C{{H}_{3}}COC{{H}_{3}}][B{{r}_{2}}]{{[{{H}^{+}}]}^{2}}\]
D) Rate\[=k[C{{H}_{3}}COC{{H}_{3}}][B{{r}_{2}}][{{H}^{+}}]\]
Correct Answer: A
Solution :
[a] Rewriting the given data for the reaction \[C{{H}_{3}}COC{{H}_{3}}(aq)+B{{r}_{2}}(aq)\xrightarrow{{{H}^{+}}}\] \[C{{H}_{3}}COC{{H}_{2}}Br(aq)+{{H}^{+}}(aq)+B{{r}^{-}}(aq)\]S. No | Initial concentration of\[C{{H}_{3}}COC{{H}_{3}}\]in M | Initial concentration of\[B{{r}_{2}}\]in M | Initial concentration of \[{{H}^{+}}\]in M | Rate of disappearance of\[B{{r}_{2}}\]in \[M{{s}^{-1}}\]i.e\[-\frac{d}{dt}[B{{r}_{2}}]\]or \[\frac{dx}{dt}\] |
1 | 0.30 | 0.05 | 0.05 | \[5.7\times {{10}^{-5}}\] |
2 | 0.30 | 0.10 | 0.05 | \[5.7\times {{10}^{-5}}\] |
3 | 0.30 | 0.10 | 0.10 | \[1.2\times {{10}^{-4}}\] |
4 | 0.40 | 0.05 | 0.20 | \[3.1\times {{10}^{-4}}\] |
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