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Reaction: H2O2(aq)+3I- (aq) +2H(aq)->I3-(aq)+2H2O(l) In thefirst 10.0 seconds of the reaction, the concentration of I- droppedfrom 1.000 M and 0.869M.
(a) Calculate the avg rate of this reaction in this timeinterval.
(b)Predict the rate of chance in the concn of H+ (that is, DELTA[H+]/DELTAt) during this time interval.
Part A soln: -1/3 DELTA[I-]/DELTA t
=-1/3(0.868M- 1.000M)/ 10.0 s
=4.40x10^-3 M/s
Part B soln: Rate =-1/2 DELTA [H+]/DELTAt
=-2(RATE)
-2(4.40X10^-3 M/s)
=-8.80 x10^-3 M/s
My Q: in Part B why is it multiplied by -2 and not -1/2 as shownin the first line of Part B?
Reaction: H2O2(aq)+3I- (aq) +2H(aq)->I3-(aq)+2H2O(l) In thefirst 10.0 seconds of the reaction, the concentration of I- droppedfrom 1.000 M and 0.869M.
(a) Calculate the avg rate of this reaction in this timeinterval.
(b)Predict the rate of chance in the concn of H+ (that is, DELTA[H+]/DELTAt) during this time interval.
Part A soln: -1/3 DELTA[I-]/DELTA t
=-1/3(0.868M- 1.000M)/ 10.0 s
=4.40x10^-3 M/s
Part B soln: Rate =-1/2 DELTA [H+]/DELTAt
=-2(RATE)
-2(4.40X10^-3 M/s)
=-8.80 x10^-3 M/s
My Q: in Part B why is it multiplied by -2 and not -1/2 as shownin the first line of Part B?
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