For an elementary reaction, 2A+B→C+D , the active mass of B is kept constant but that of A is tripled. The rate of reaction will

For an elementary reaction, 2A+B→C+D Given values are;The active mass of B is constant and concentaration of A is tripledRate equation expression,−12d[A]dt=d[B]dt=d[C]dt=d[D]dt Rate of reaction,r=K[A]2[B]1 Where, r= Rate of reactionK = rate constant[A] = Concentration of A[B] = Concentration of Br1= K[A]2[B]1 but B is constant ……………(i)r2 = K[3A]2[B] …….(ii)Divide the equation (i) by equation (ii);r1r2=K[A]2[B]1K[3]2[A]2[B]1 r1r2=19 ∴r2=9r1