AIPMT Prelims Chemistry Chemical Kinetics Class 12 Questions

In a reaction, A + B → Product, rate is doubled when the concentration of B is doubled, and rate increases by a factor of 8 when the concentrations of both the reactants (A and B) are doubled, rate law for the reaction can be written as:

In a zero-order reaction for every 10° rise of temperature, the rate is doubled. If the temperature is increased from 10°C to 100°C, the rate of the reaction will become:

Which one of the following statements for the order of a reaction is incorrect?

For the reaction N₂O₅(g) → 2NO₂(g) + 1/2 Ω₂(g) the value of rate of disappearance of N₂O₅ is given as 6.25 × 10⁻³ mol L⁻¹s⁻¹. The rate of formation of NO₂ and O₂ is given respectively as:

During the kinetic study of the reaction 2A + B → C + D, following results were obtained:

For an endothermic reaction, energy of activation is Eₐ and enthalpy of reaction is ΔH (both of these in kJ/mol). Minimum value of Eₐ will be

For the reaction, N₂ + 3H₂ ⟶ 2NH₃, if d[NH₃]/dt = 2 × 10⁻⁴ mol L⁻¹ s⁻¹, the value of -d[H₂]/dt would be:

In the reaction BrO₃⁻ (aq) + 5 Br⁻ (aq) + 6H⁺ → 3 Br₂(l) + 3 H₂O(l): The rate of appearance of bromine (Br₂) is related to rate of disappearance of bromide ions as following:

Half life period of a first-order reaction is 1386 seconds. The specific rate constant of the reaction is:

For the reaction A + B ⟶ products, it is observed that: (a) on doubling the initial concentration of A only, the rate of reaction is also doubled and (b) on doubling the initial concentrations of both A and B, there is a change by a factor of 8 in the rate of the reaction. The rate of this reaction is given by:

The rate constants k₁ and k₂ for two different reactions are 10¹⁶.e⁻²⁰⁰⁰/T and 10¹⁵.e⁻¹⁰⁰⁰/T, respectively, the temperature at which k₁=k₂, is:

The reaction of hydrogen and iodine monochloride is given as: H₂(g) + 2ICl(g) → 2HCl(g) + I₂(g) The reaction is of first order with respect to H₂(g) and ICl(g), following mechanisms were proposed. Mechanism A: H₂(g) + 2ICl(g) → 2HCl(g) + I₂(g) Mechanism B: H₂(g) + ICl(g) → HI(g); slow HI(g) + ICl(g) → HCl(g) + I₂(g); fast Which of the above mechanism(s) can be consistent with the given information about the reaction?

In a first-order reaction A → B, if k is rate constant and initial concentration of the reactant A is 0.5 M, then the half-life is

If 60% of a first order reaction was completed in 60 minutes, 50% of the same reaction would be completed in aproximately

For the reaction 2A + B → 3C + D which of the following does not express the reaction rate?

Consider the reaction N₂(g) + 3H₂(g) → 2NH₃(g). The equality relationship between (d[NH₃]/dt) and -(d[H₂]/dt) is:

For a first order reaction A → B, the reaction rate at reactant concentration of 0.01 M is found to be 2.0 × 10⁻⁵ mol L⁻¹ s⁻¹. The half life period of the reaction is:

The rate of reaction between two reactants A and B decreases by a factor of 4, if the

The rate of a first order reaction is 1.5 ×10⁻² mol L⁻¹ min⁻¹ at 0.5 M concentration of the reactant. The half life of the reaction is :-

The activation energy for a simple chemical reaction A → B is Ea in forward direction. The activation energy for reverse reaction :

The reaction $\text{A} \rightarrow \text{B}$ follows first order kinetics. The time taken for 0.8 mole of A to produce 0.6 mole of B is 1 hour. What is the time taken for conversion of 0.9 mole of A to produce 0.675 mole of B?

If the rate of the reaction is equal to the rate constant, the order of the reaction is:

The temperature dependence of rate constant $(k)$ of a chemical reaction is written in terms of Arrhenius equation, $k = A e^{-E/RT}$. Activation energy $(E^*)$ of the reaction can be calculated by plotting

The radioisotope, tritium (₁³H) has a half-life of 12.3 years. If the initial amount of tritium is 32 mg, how many milligrams of its would remain after 49.2 years :

3A → 2B, rate of reaction +d[B]/dt is equals to :-

2A → B + C It would be a zero order reaction when :-

For the reaction 2N₂O₅ → 4NO₂ + O₂ rate and rate constant are 1.02 × 10⁻⁴ and 3.4 × 10⁻⁵ sec⁻¹ respectively. Then conc. of N₂O₅ at that time will be : -

When a bio chemical reaction is carried out in laboratory out side the human body in the absence of enzyme, then the rate of reaction obtained is 10⁶ times, than activation energy of reaction in the presence of enzyme is : -

A 300 gram radioactive sample has half life of 3 hours. After 18 hour's remaining quantity will be :

For the reaction H⁺ + BrO₃⁻ + 3Br⁻ → 3Br₂ + H₂O which of the following relation correctly represents the consumption & formation of reactants and products :