Advertisements
Advertisements
प्रश्न
What are pseudo-first-order reactions?
Advertisements
उत्तर
Certain reactions that are expected to be of higher order follow the first-order kinetics. Such reactions are said to be pseudo-first-order reactions.
संबंधित प्रश्न
How will you represent first order reactions 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.
Answer the following in brief.
Give one example and explain why it is pseudo-first-order.
Write a mathematical expression for integrated rate law for zero-order reaction.
The rate constant of the first order reaction is 1.386 min–1. Calculate the time required for 80% reactant to decompose?
Derive an expression for the relation between half-life and rate constant for first-order reaction.
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.
The decomposition of phosphine (PH3) on tungsten at low pressure is a first-order reaction. It is because the
Identify the order for the following reaction.
Radioactive disintegration of 92U238
The time for half change in a first order decomposition of a substance A is 60 seconds. Calculate the rate constant. How much of A will be left after 180 seconds?
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?
How long would it take to electroplate a spoon with 0.1 mol of silver (108 g/mol) at a constant current of 2.0 A using AgNO3?
The rate constant of a reaction has same units as the rate of reaction. The reaction is of ____________.
The activation energy of a reaction is zero. Its rate constant at 280 K is 1.6 × 10-6 s-1, the rate constant at 300 K is ______.
Which of the following represents the expression for `(3/4)^"th"` life of 1st order reaction?
Reaction given below follows first order kinetics:
\[\ce{2N2O2 -> 4NO2 + O2}\]
Calculate the rate constant of reaction if concentration of N2O2 is 0.05 M and rate of reaction is 1.5 × 10−6 mol L−1 s−1?
For a zero order reaction, the plot of [A]t vs t is linear. The slope of the line is equal to ____________.
The initial concentration of reactant (A) is 2 mol dm−3 for a zero order reaction \[\ce{A -> B}\]. The rate constant (k) is related to its half-life `("t"_(1//2))` by the equation:
The rate of formation of B at time t for reaction \[\ce{2A -> 3B}\] is equal to ____________.
For a first order reaction, \[\ce{A -> B}\], if [A] = 1 M and rate is 4 × 10−2 M s−1. What is the rate constant of the reaction?
Half-life of first order reaction is 20 minutes. What is the time taken to reduce the initial concentration of the reactant to `1/10`th?
Which is the unit of rate constant for the first-order reaction if time is expressed in seconds?
The integrated rate equation is Rt = log C0 – log Ct, then the straight-line graph is obtained by plotting.
The integrated rate law is a direct relationship between time and ______
Which among the following reactions is an example of pseudo first order reaction?
The rate constant for a first order reaction is 7.0 × 10-4 s-1. If initial concentration of reactant is 0.080 M, what is the half-life of reaction?
Calculate half-life of a first order reaction in minute if the rate constant is 1 × 10-3 s-1.
Half-life of a first order reaction is 30 minutes and initial concentration of reactant is 0.1 M.
What is half-life of the reaction if initial concentration of reactant is doubled?
The plot that represents the zero order reaction is:
