Consider the following generic reaction a b it is

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8. Consider the following generic reaction: A B It is first order with a half-life, t 1/2 , of 0.88 s. How long will it take the initial concentration to be reduced to 35 %? a. 1.333 s b. 0.579 s c. 0.547 s d. 0.308 s e. 2.514 s 9. For the following reaction, how is the rate of disappearance of the reactant related to the rate of appearance for the products? 4 PH 3 (g) P 4 (g) + 6 H 2 (g) 10. What is the rate law for the reaction below, given the following data: 14 H + (aq) + 2 HCrO 4 - (aq)+ 6 I - (aq) 2 Cr 3+ (aq)+ 3 I 2 (s)+ 8 H 2 O(l) Experiment [H + ], (M) [HCrO 4 - ], (M) [ I - ], (M) Initial Rate (M/s) 1 0.04 0.1 0.1 0.03 2 0.02 0.1 0.1 0.03 3 0.02 0.2 0.1 0.12 4 0.02 0.1 0.4 0.12
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