Advertisements
Advertisements
प्रश्न
The rate of catalysed reaction is large than the uncatalysed reaction as _______.
विकल्प
Ea is larger
Ea is lower
Ea is same
threshold energy is absent
Advertisements
उत्तर
The rate of catalysed reaction is large than the uncatalysed reaction as Ea is lower.
APPEARS IN
संबंधित प्रश्न
Answer the following in brief.
How will you represent the zeroth-order reaction graphically?
Answer the following in brief.
Derive the integrated rate law for the first-order reaction,
\[\ce{A_{(g)} -> B_{(g)} + C_{(g)}}\] in terms of pressure.
Write a mathematical expression for integrated rate law for zero-order reaction.
What is half life of first order reaction if time required to decrease concentration of reactants from 0.8 M to 0.2 M is 12 hours?
Explain pseudo first order reaction with a suitable example.
For a first-order reaction \[\ce{A -> B}\] the rate constant is x min−1. If the initial concentration of A is 0.01 M, the concentration of A after one hour is given by the expression.
A zero-order reaction \[\ce{X -> Product}\], with an initial concentration 0.02 M has a half-life of 10 min. if one starts with concentration 0.04 M, then the half-life is
The decomposition of phosphine (PH3) on tungsten at low pressure is a first-order reaction. It is because the
Assertion: rate of reaction doubles when the concentration of the reactant is doubles if it is a first-order reaction.
Reason: rate constant also doubles.
The rate constant of a reaction is 5.8 × 10−2 s−1. The order of the reaction is ____________.
If 75% of a first order reaction was completed in 60 minutes, 50% of the same reaction under the same conditions would be completed in ____________.
A first order reaction is 40% complete in 50 minutes. Calculate the value of the rate constant. In what time will the reaction be 80% complete?
What is the value of rate constant of first order reaction, if it takes 15 minutes for consumption of 20% of reactants?
If [A] is the concentration of A at any time t and [A]0 is the concentration at t = 0, then for the 1st order reaction, the rate equation can be written as ____________.
The rate and the rate constants of the reaction, \[\ce{A + 2B -> C + D}\] are 8 × 10−3 mol dm−3 s−1 and 2 × 10−3 s−1 respectively. The concentrations of A and B are 4 mol dm−3 each. The overall order of the reaction is ____________.
For first order reaction the slope of the graph of log10 [A]t Vs. time is equal to ____________.
The slope of a graph, log [A]t versus 't' for a first order reaction is −2.5 × 10−3 s−1. The rate constant for the reaction is ____________.
The rate of formation of B at time t for reaction \[\ce{2A -> 3B}\] is equal to ____________.
In a reaction \[\ce{N2_{(g)} + 3H2_{(g)} -> 2NH3_{(g)}}\], if the rate of disappearance of N2(g) is 2.6 × 10−4 M/s, the rate of disappearance of H2(g) in M/s is ____________.
A first order reaction takes 40 minutes for 30% completion. Calculate the half-life of reaction.
Half-life of first-order reaction \[\ce{X -> Y + Z}\] is 3 minutes. What is the time required to reduce the concentration of 'X' by 90 % of it's initial concentration?
Which is the unit of rate constant for the first-order reaction if time is expressed in seconds?
Rate constant for zero order reaction is 2 × 10-2 mol L-1 s-1. If the concentration of the reactant after 25 sec. is 0.5 M, what is the initial concentration of reactant?
The expression to calculate time required for completion of zero order reaction is ______.
Which among the following reactions is an example of pseudo first order reaction?
Which of the following correctly represents integrated rate law equation for a first order reaction in a gas phase?
What are integrated rate laws?
The half-life period for the first order reaction is 1.7 hrs. How long will it take for 20% of the reactant to disappear?
The plot that represents the zero order reaction is:
