If 60% of a first order reaction was completed in 60 min,50% of the same reaction would be completed in approximately.
50 min
45 min
60 min
40 min
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.
For the reaction,Products, it is observed that.
Rate = k[A2[B]
Rate = k[A][B]2
Rate = k[A]2[B]2
Rate = k[A][B]
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.
The reaction of hydrogen and iodine monochloride is given as.
B only
A and B both
Neither A nor B
A only
The bromination of acetone that occurs in acid solution is respresented by this equation.
The reaction follows first order kinetics. The time taken for 0.8 mole of A to produce 0.6 mole of B 1 h. What is the time taken for the conversion of 0.9 mole of A to 0.675 mole of B ?
0.25 h
2 h
1 h
0.5 h
In a first order reaction if k is rate constant and initial concentration of the reactant A is 0.5 M, then the half-life is.
