Descriptions of enzyme mechanisms often contain the terms reaction intermediate, transition state, and transition state analogue. The terms intermediate and transition state both describe chemical species along the reaction pathway, but there are important distinctions between the two. Transition state analogues are often used in enzyme mechanism studies. Match the phrases to the term that they describe. Intermediate Transition state analogue Transition state
1. Compound designed to mimic the the structure of a transition state
2. Contain partially formed and partialy broken bonds.
3. Often serves as a potent enzyme inhibitor.
4. Any reaction pathway species with a finite (>10^-13s) lifetime.
5. Example include Es(enzyme substrate complex andEP( enzyme product complex)
6. Some are stable enough to be detected and structurally charactreized.
7. Hypothetical maximum energy species of a reaction pathway does not have a finite lifetime.

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answer: - 3.) the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

solution: - as per the rules, oxidation number of oxygen in its compounds is -2. the sum of oxidation numbers of all the elements of a molecule or compound is zero.

also, the oxidation number in elemental form is zero.

in no, the oxidation number of o is -2 so the oxidation number of n is +2 so that the sum is zero.

similarly, the oxidation number of c in co is +2 and o is -2.

on product side the oxidation number of n is 0 as it is in the elemental form() .

oxidation number of c in carbon dioxide is +4 as there are two oxygen in it and we know that each oxygen is -2.

so, oxidation number of n is changing from +2 to 0 and the oxidation number of c is changing from +2 to +4.

since nitrogen is reduced and hence no is acting as an oxidizing agent. carbon is oxidized and so co is acting as a reducing agent.

so, the right choice is number 3.)the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.