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Question
The reaction between selenous acid and the iodide ion in acid solution is
H2SeO3(aq) + 6I-(aq) + 4H+(aq) → Se(s) + 2I3-(aq) + 3H2O(l)
The data in the following table were measured at 0C.
| Experiment | [H2SeO3]0(M) | [H+]0(M) | [I"]0(M) | Initial Rate [mol/(L·s)] |
| 1 | 1.00 x 10-4 | 2.00 x 10-2 | 3.00 x 10-2 | 5.30 x 10-7 |
| 2 | 2.00 x 10-4 | 2.00 x 10-2 | 3.00 x 10-2 | 1.06 x 10-6 |
| 3 | 3.00 x 10-4 | 4.00 x 10-2 | 3.00 x 10-2 | 6.36 x 10--6 |
| 4 | 3.00 x 10-4 | 8.00 x 10-2 | 3.00 x 10-2 | 2.54 x 10-5 |
| 5 | 3.00 x 10-4 | 8.00 x 10-2 | 6.00 x 10-2 | 2.04 x 10-4 |
| 6 | 2.00 x 10-4 | 2.00 x 10-2 | 6.00 x 10-2 | 8.48 x 10-6 |
Tripling the initial concentration of I- while holding the initial concentrations of H2SeO3 and H+ constant increases the initial rate of the reaction by a factor of
A) 27.
B) 9.
C) 3.
D) 8.
E) 6.
Answer
This answer is hidden. It contains 1 characters.
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