IO_3^-(aq) + 5I^-(aq) + 6H^+(aq) rightarrow 3I_2(aq) + 3H_2O(l) the rate of disa

Question

IO_3^-(aq) + 5I^-(aq) + 6H^+(aq) rightarrow 3I_2(aq) + 3H_2O(l) the rate of disappearance of IO_3^-(aq) at a particular time and concentration is 2.1 times 10^-3 mol/(L middot s). What is the rate of appearance of I_2(aq)? A) -6.3 tiems 10^-3 mol/(L middot s) B) 2.1 times 10^-3 mol/(L middot s) C) 6.3 times 10^-3 mol/(L middot s) E) 7.0 times 10^-3 ml/(L middot s) E) 1.4 times 10^-3 mol/L middot s) The following data were obtained for the hypothetical reaction 2A + B rightarrow products. What is the overall order of this reaction? A) 0 B) 3 C) 1 D) 4 E) 1/2

Explanation / Answer

              A          B           initial rate

if reaction 2A + B Products

For A

Consider experiment 1 and 3 at constant B

(0.6/0.2)n      = 45/5

3n = 9

n= 2

for B consider experiment 1 and 2 at constant A

(0.2/0.1)n= 20/5

2n= 4

n= 2

Rate = k[A]2[B]2

Overall order = 2+2 =4

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