The following data are for the decomposition of hydrogen peroxide in dilute sodium hydroxide at 20...
The following data are for the decomposition of hydrogen
peroxide in dilute sodium hydroxide at 20 °C.
H2O2(aq) -->
H2O(l) + ½ O2(g)
| [ H2O2], M | 2.58×10-2 | 1.29×10-2 | 6.45×10-3 | 3.23×10-3 |
| time, min | 0 | 8.68 | 17.4 | 26.0 |
Hint: It is not necessary to graph these
data.
(1)
The half life observed for this reaction is ____
min .
(2)
Based on these data, the rate constant for this
(zero/first/second?) order reaction is
______min -1.
Homework Answers
Half-life is the time required for a quantity to reduce to half of its initial value.
H2O2 takes 8.68min to be half ( i.e.1.29×10-2 M) of its initial concentration (i.e. 2.58×10-2 M), so its half age will be 8.68min
(1) = 8.68min
(2) first of all we calculate order of reaction
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The following data are for the decomposition of hydrogen
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