If a unimolecular reaction, A(g) toProducts, takes place according to the mechanism (I) A+Aoverset(k_(1))underset(k_(-1))(hArr)A^(a)+A (II) A^(a)underset(k_(2))(to)P where k_(1), k_(-1) and k_(2) are the rate constants and P, A and A^(a) stand for product molecule, normal molecule of reactant and activated molecules of reactant and activated molecules of reactant respectively. Which of the following expressions are correct?

If a unimolecular reaction, A(g) toProducts, takes place according to

1.	If a unimolecular reaction, A(g) toProducts, takes place according to the mechanism (I) A+Aoverset(k_(1))underset(k_(-1))(hArr)A^(a)+A (II) A^(a)underset(k_(2))(to)P where k_(1), k_(-1) and k_(2) are the rate constants and P, A and A^(a) stand for product molecule, normal molecule of reactant and activated molecules of reactant and activated molecules of reactant respectively. Which of the following expressions are correct?
Answer» `(d[A^(a)])/(dt)=k_(1)[A]^(2)-k_(-1)[A^(a)][A]-k_(2)[A^(a)]` `(d[A^(a)])/(dt)=0` `[A^(a)]=(k_(1)[A]^(2))/(k_(-1)[A]+k_(2))` All of the above Answer :D