The rate equation for the reaction 2A + B → C is found to be a : r = k[A][B]. The correct statement in relation of this reaction is that the
Options:
A .  
Rate of formation of C is twice the rate of disappearance of A
B .  
t12 is a constant
C .  
Unit of k is s−1
D .  
Value of k is independent of the initial concentration of A and B
Answer: Option D : D The order of the reaction is two. Option (b) and (c) apply to first order reactions. Options (a) is wrong since the rate of formation of C is half the rate of disappearance of A. Option (d) is always true since value of k for any order is independent of the initial concentration of the reactants.
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