Chemistry - GOC Question with Solution | TestHub
What are isohyptic and non-isohyptic reactions? Explain with reactions. Which of the following is an isohyptic reaction?
Options:
Answer:
Solution:
An isohyptic reaction is one in which the oxidation states of the reacting carbon atoms do not change.
Substitution:
In this reaction, the carbon bearing the leaving group maintains an oxidation state of -1 (e.g., in CH3CH2Br and in CH3CH2OH).
A non-isohyptic reaction, conversely, involves a change in the oxidation state of carbon.
Addition:
Here, C1 changes its oxidation state from -2 to -1, and C2 changes from -1 to 0 (as seen in the conversion of propene to 1,2-dibromopropane).
Elimination:
In this case, C2 changes from an oxidation state of 0 to -1, and C1 changes from -3 to -2 (as observed in the conversion of 2-bromopropane to propene). The oxidation of ethanol to ethanal also results in a change in the carbon's oxidation state. Therefore, (B) represents the only isohyptic reaction.
