The addition of a catalyst during a chemical reaction alters which of the following quantities?

What would be the activation energy of a reaction when the temperature is increased from 27^oC to 37^oC?

Which of the following statement is not correct?

The given reaction 2 FeCl₃ + SnCl₂ ⟶ 2FeCl₂ + SnCl₄ is an example of ______.

Activation energy of a chemical reaction can be determined by ______.

How much time will be taken for 20 gm to reduce 5 g? [R = 2 x 10^-3s^-1 (I order reaction)]

Which of the above graphs is correct for zero order reactions?

For the second order reaction \({ t }_{ \frac { 1 }{ 2 } }\alpha \)  _____.

Which one of the following is an example of pseudo first order reaction?

In any unimolecular reaction  _____.

Rate law cannot be determined from balanced chemical equation if ______.

CH₃COOCH₃ + H₂ OH \(\overset { { H }^{ + } }{ \longrightarrow } \) CH₃ COOH + CH₃ OH is an example of _______ order reaction.

The magnitude of order of a reaction may be ______.

For a general reaction aA + bB ⟶Products, the rate of the reaction is equal to______.

The time required for 50% completion of the reaction is known as _______.

Define half life of a reaction. Show that for a first order reaction half life is independent of initial concentration.

Describe the graphical representation of first order reaction.

Write the rate law for the following reactions.
(a) A reaction that is 3/2 order in x and zero order in y.
(b) A reaction that is second order in NO and first order in Br₂.

Rate of chemical reaction is not uniform throughout. Justify you answer:

Why is instantaneous rate preferred over average rate?

The decomposition reaction of ammonia gas on platinum surface has a rate constant R = 2.5 x 10^-4mol L^-1. What is the order of the reaction.

A first order reaction has a specific reaction rate of 10^-3 S^-1. How much time will it take for 10gm of the reactant to reduce to 2.5 gm?

If the rate of a reaction gets doubled as the temperature is increased from 27^oC to 37^oC. Find the activation energy of reaction?

Mention the factors that affected the rate of a chemical reaction.

Consider the oxidation of nitric oxide to form NO₂
2NO_(g) + O_2(g) ➝2NO_2(g)
(a). Express the rate of the reaction in terms of changes in the concentration of NO,O₂ and NO₂.
(b). At a particular instant, when [O₂] is decreasing at 0.2 mol L⁻¹s⁻¹ at what rate is [NO₂] increasing at that instant?

The rate of formation of a dimer in a second order reaction is 7.5 x 10^-3 mol L^-1 s^-1 at 0.05 mol L^-1 monomer concentration. Calculate the rate constant.

Write Arrhenius equation and explains the terms involved.

For the reaction 2x+y ⟶ L find the rate law from the following data. 

A reaction is of second order in A and first order in B.
(i) Write the differential rate equation. 
(ii) How is the rate affected on increasing the concentration of A three times?
(iii) How is the rate affected when the concentration of both A and B is doubled?

Give the characteristics of first order reaction.

The rate constant, the activation energy and frequency factor of a chemical reaction at 25^oC are 3.0 x 10^-4 S^-1; 104.4 kJ mol^-1  and 6.0 x 10¹⁴ S^-1 respectively. What is the value of the rate constant when T ⟶ ∞?

The rate constant k for the first order gas phase decomposition of ethyl iodide, C₂H₅I ⟶ C₂H₄ + HI is 1.60 x 10^-5 s^-1 at 600k and 6.36 x 10^-3 s^-1 at 700K. Calculate the energy of activation for this reaction.

The decomposition of NH₃ on platinum surface is zero order reaction what are the rates of production of N₂ and H₂ if k = 2.5 x10^-4 mol + L S^-1.

A reaction is first order in A and second order in B.
(i) Write the differential rate equation.
(ii) How is rate affected on increasing the concentration of B three times?
(iii) How is the rate affected when the concentrations of both A and B are doubled?

Write the differences between rate and rate constant of a reaction.

How do nature of the reactant influence rate of reaction.

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?

Write an account of the Arrhenius equation for rates of chemical reactions. 

A first order reaction laws on rate constant 1.15 x 10^-3 S^-1. How long will 5 g of this reactant take to reduce to 3g?

The specific reaction rates of a chemical reaction are 2.45 x 10^-5 sec^-1 at 273 K and 16.2 x 10^-4 sec^-1 at 303 K. Calculate the activation energy.

The initial rate of a first order reaction is 5.2 x 10^-6 mol lit^-1 S^-1 at 298 K. When the initial concentration of reactant is 2.6 x 10^-3 mol.lit^-1, calculate the first order rate constant of the reaction at the same temperature.