QUESTION 2 Consider the following data concerning the equation: H202+ 31+ 2H*- 13+2H20 [H2021 [H*) rate 0.100 M 5.00 x 104 M 1.00 x 10-2 M 0.137 Misec I. 0.100 M 1.00 x 10-3 M 1.00 x 10-2 M 0.268 M/sec I. 0.200 M 1.00 x 10-3 M 1.00 x 10-2 M 0.542 M/sec IV. 0.400 M 1.00 x 10-3 M 2.00 x 10-2 M 1.084 M/sec Two mechanisms are proposed: H,O, +T →H,0+or or +H HOI I. HOI+I+H→4+H20 I, +I"→15 H,O, +F+H→H,0+HOI II. HOI+I +H* →h+H,O I+I¯ →I5 Which mechanism and which step as the rate determining step would best fit the data?
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
![QUESTION 2
Consider the following data concerning the equation:
H202+ 31+2H* 13+2H20
(H2021
(H*]
rate
0.100 M
5.00 x 10-4 M 1.00 x 10-2 M 0.137 M/sec
0.100 M
1.00 x 10-3 M 1.00 x 10-2 M 0.268 M/sec
I.
II.
0.200 M
1.00 x 10-3 M 1.00 x 10-2 M 0.542 M/sec
IV.
0.400 M
1.00 x 10-3 M 2.00 x 10-2 M 1.084 M/sec
Two mechanisms are proposed:
H,O, +T →H,0+or
or +H HOI
1.
HOI+I +H →LL+H,0
I,+I" →I,
H,0,+F+H* →H,0+HOI
II. HOI+I +H*→h+H,0
Which mechanism and which step as the rate determining step would best fit the data?
O a. Mechanism I, with the first step the rate determining step.
Ob.Mechanism I, with the second step the rate determining step.
Oc Mechanism II, with the first step rate determining.
O d. Mechanism II, with the second step rate determining.
O e. None of the above could be correct.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Feb7f49f8-dbf4-4676-aee4-e4542b2012da%2F33ff8861-c9b6-44af-823d-37fc35bc2b5c%2Fnbdwtp6_processed.jpeg&w=3840&q=75)
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