19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The reactions of higher order are rare because
The unit of rate constant for a zero-order reaction is
The rate law for a reaction between the substances P and Q is given by rate a b k P Q On doubling the concentration of P and reducing the concentration of Q to one-half, the ratio of the new rate to the earlier rate…
Statement I The rate law may not depend on the concentration of every reactants. Statements II With increase in temperature, the rate of reaction increases. Choose the correct option regarding above statements.
Which of the following statement(s) is/are true? I.Rate law is an experimental fact while law of mass action is a theoretical proposal. II.Rate law is more informative than law of mass action for the development mecha…
I. Order of a reaction can be 0, 1, 2, 3…. II. Order of a reaction can never be a fraction. Which of the above statement(s) is/are true? Choose the correct option.
Chemical kinetics plays an important role in
Consider the reaction, 2N O 4NO O . -> In the reaction NO2 is being formed at the rate of 0.0125 mol L–1 s–1. What is the rate of reaction at this time?
In a reaction 2HI ⟶ H2 + I2, the concentration of HI decreases from 0.5 mol L–1 to 0.4 mol L–1 in 10 minutes. What is the overall rate of reaction during this interval?
The rate of a reaction is expressed in different ways as follows : 1 d[C] 1 d[D] 1 d[A] d[B]. 2 dt 3 dt 4 dt dt The reaction is
Similarly, the stoichiometric coefficient of D, A and B is 3,4 and 1 respectively. Thus using the concept, B D A C -> So, answer b is correct.
For the reaction 4NH 5O 4NO 6H O, -> if the rate of disappearance of NH3 is 3.6 × 10–3 mol L-1 s–1, what is the rate of formation of H2O?
The rate of formation of ammonia by the reaction : N2 + 3 H2 ⟶ 2 NH3 is expressed as d[NH ] dt = 2.5 × 10–4 mol L–1 s–1 . The rate of consumption of H2 expressed as d[H ] dt will be
Rate of a reaction can be expressed as I. The rate of decrease in concentration of any one of the reactants. II. The rate of increase in concentration of any one of the products. Which of the above mentioned statement…
Assertion (A) Δ[R] is multiplied with -1 to make the rate of the reaction a positive quantity. Reason (R) Δ[R] is a negative quantity in the expression rate of disappearance of R R t
In a reaction, 2A ->products, the concentration of A decreases from 1.0 mol L-1 to 0.8 mol L-1 in 20 min. Calculate the rate during this interval.
For the reaction R P, -> the concentration of a reactant changes from 0.03 M to 0.02 M in 25 min. Calculate the average rate of reaction using units of time in seconds.
Consider the following statements regarding the equation given below, Hg l Cl g HgCl s -> I.Stoichiometric coefficients of the reactants and products are same in the above reaction. II.Rate of reaction Hg Cl…
In the reaction given below 2HI g H g I g -> hoose the correct alternative.
The decomposition of N2O5 in CCl4 at 318 K has been studied by monitoring the concentration of N2O5 in the solution. Initially the concentration of N2O5 is 1.16 mol L-1 and after 92 min, it is reduced to 1.04 mol L-1.…
For the reaction, 4P Q 2R 2S, -> Which of the following statement(s) is/are true? I. Rate of appearance of S is double the rate of the disappearance of Q II. Rate of disappearance of Q is one fourth the rate of disa…
Contact process is used in the formation of sulphur trioxide, 2SO g O g 2SO g The rate of reaction can be expressed as O 2.5 10 molL s . t x Then rate of disappearance of [SO2] will be
The conversion of molecules x to y follows second order kinetics. If concentration of x is increased to three times how will it affect the rate of formation of y ?
Statement I The rate law may not depend on the concentration of every reactants. Statements II With increase in temperature, the rate of reaction increases. Choose the correct option regarding above statements.
The rate law for a reaction between the substances P and Q is given by rate a b k P Q On doubling the concentration of P and reducing the concentration of Q to one-half, the ratio of the new rate to the earlier rate…