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Carbene intermediates are produced by th...

Carbene intermediates are produced by the photolysis of diazomethane `(CH_2N_2)` or kenene `(CH_2 = C = O)`. They are also produced by the reaction of `CHX_3` with base or by Simmons-Smith reaction. There are two types of carbenes, singlet and triplet. They are so called due to their spin state.
In which reaction, the insertion of methylene increases potential energy ?

A

`CH_(2) = CH_(2) +:CH_(2) rarr CH_(3) - CH =CH_(2)`

B

C

`Me-Ch=CH_(2)+ :CH_(2) rarr Me-CH=CH-CH_(3)`

D

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The correct Answer is:
B
(b) Due to ring strain in cyclopropane
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Carbene intermediates are produced by the photolysis of diazomethane (CH_2N_2) or kenene (CH_2 = C = O) . They are also produced by the reaction of CHX_3 with base or by Simmons-Smith reaction. There are two types of carbenes, singlet and triplet. They are so called due to their spin state. Singlet and triplet carbene are same in :

Carbene intermediates are produced by the photolysis of diazomethane (CH_2N_2) or kenene (CH_2 = C = O) . They are also produced by the reaction of CHX_3 with base or by Simmons-Smith reaction. There are two types of carbenes, singlet and triplet. They are so called due to their spin state. Which carbene is produced in the following reactions ? .

Carbene intermediates are produced by the photolysis of diazomethane (CH_2N_2) or kenene (CH_2 = C = O) . They are also produced by the reaction of CHX_3 with base or by Simmons-Smith reaction. There are two types of carbenes, singlet and triplet. They are so called due to their spin state. An optically active alkene (I) with lowest molecular mass on hydrogenation gives optically inactive alkene, but on insertion of methylene carbene ( : CH_2) in (I) , it gives optically active compound (II) . The compounds (I) and (II) are : .

Carbene intermediates are produced by the photolysis of diazomethane (CH_2N_2) or ketene (CH_2 = C = O) . They are also produced by the reaction of CHX_3 with base or by Simmons-Smith reaction. There are two types of carbenes, singlet and triplet. They are so called due to their spin state. Spin state of carbene is determined by using the formula : where S is the sum of all electron spin numbers.

From A: CO, B: CO_2, C: NO_2, D: SO_3 – State which will not produce an acid on reaction with water.

Compute the standard free energy of the reaction at 27^@C for the combustion of methane CH_4(g) + 2O_2(g) to CO_2(g) +2H_2O(l) using the following data : Also comment on the feasibility of the reaction.

(i) Mention at least three ways by which the concentration of SO_(3) can be increased in the following reaction in a state of equilibrium. 2SO_(2)(g) + O_(2)(g) rarr 2SO_(3)(g) + heat (ii) In a reaction A+B rarr C+D , what will happen to the equilibrium state if concentration of A is increased?

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