The rate of reaction between two reactants A and B decreases by a factor of 4, if the concentration of reactant B is doubled. The order of this reaction with respect to reactant B is.
-1
-2
1
2
A substance 'A' decomposes by a first order reaction starting initially with [A]=2.00 m and after 200 min,[A] becomes 0.15 m.For this reaction t1/2 is.
53.49 min
50.49 min
48.45 min
46.45 min
The experimental data for the reaction
The activation energy for a simple chemical reaction is Ea in forward direction. The activation energy for reverse reaction.
Can be less than or more than Ea.
Is always double of Ea.
Is negative of Ea.
Is always less than Ea.
For a first order reaction the reaction rate at reactant concentration of 0.01 M is found to be 2.0 x 10-5 ,mol L-1 s-1. The half-life period of the reaction is.
220 s
30 s
300 s
347 s
The plot of concentration of the reactant vs time for a reaction is a straight line with a negative slope.This reaction follows.
Zero order rate equation.
First order rate equation.
Second order rate equation.
Third order rate equation.
A chemical reaction is catalysed by a catalyst X.Hence,X.
Reduces enthalpy of the reaction.
Decreases rate constant of the reaction.
Increases activation energy of the reaction.
Does not affect equilibrium constant of the reaction.
1.732
3
1.02 x 10-4
3.4 x 105
