Consider the following facts to answer question 31.-32: The reaction between P a

Question

Consider the following facts to answer question 31.-32: The reaction between P and Q can lead to either R or S depending on the chosen reaction conditions. The reaction coordinate diagram on the right describes the characteristics of this hypothetical reaction. The erroneous statement among the ones given below regarding this hypothetical reaction is. Kinetic product of the reaction is R. S is the thermodynamic product of the reaction and is more stable than R The activation barrier for the conversion of P and Q to R is identical for the reverse reaction, namely R decomposing back to P and Q. Reaction between P and Q when carried out under equilibrium control will yield S

Explanation / Answer

I observe you are really confused about this problem and hence I am going to give detailed explanation of all the options.

A) This is True as we observe final energy state f S is lower than that of R but activation energy for S is more than that for R. Hence in the normal conditions the activation energy barrier of R will be crossed first and hence R will be formed at lower rigorous conditions.

B) This is True as explained above since energy state of S is lower than that of R. And we know lower the energy higher is the stability.

C) FALSE. The curve is for Activation energy for the P+Q==>R reaction and without mentioning we can not just consider that backward reaction will follow the same path.

D) This is True as said earlier S is the thermodynamic product and by equilibrium we mean thermodynamic equilibrium.

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