Reaction Kinetics

The rate equation determined experimentally for this reaction: (CH₃)₃―C―Br + H₂O → (CH₃)₃―C―OH + HBr, is Rate = k[(CH₃)₃CBr] Hence it is which of the follwing?

The rate of reaction involving ions can be studied by _ method.

In zero order reactions, the rate is independent of:

B_y considering Arrhenius equation, the graph between ‘1/T’ and ‘log K’, which of the following graph represents the relationship between log K and 1/T?

The rate constant ‘k’ is 0.693 min^-1. The half-life for the first-order reaction will be:

2A + B → Product If the reactant ‘B’ is in excess, the order of reaction with respect to ‘A’ in given rate law is: Rate = k[A]₂[B] is:

Which of the following graphs is the representation for more rapidly catalysed reaction?

Choose the type of catalyst in the following reaction:

2SO_3(g) (in the presence of NO_3(g)) 2SO_2(g)

Units of k in first order reaction are:

The catalysis in which the catalyst and the reactants are In the same phase is known?

What is the overall order of this rate equation? Rate =k[H₂][NO₂]₂

If a reaction rate does not change with concentration, then it is:

Consider the hypothetical equation aA+bBcC+Dd:

Which of the following represents the correct rate equation?

Identify the correct formula to calculate the rate of reaction.

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

The amount of energy needed to weaken the existing bonds to an extent that can be broken through collision is called:

Final equation for the representation of rate of reaction in term of concentration is called:

Reaction:

H₂ + CL₂ 2HCl is a:

A solution which does not tend to vary in pH is called?

Which order of reaction obeys the expression t_1/2 = 1/ka?

Consider a reaction of A into B, if K value is 3 10^-12 at 200 then what will be the value of K at 250?

The unit of rate constant for the first order reaction is:

Which of the following is the CORRECT Arrhenius equation?

As compared to exothermic reaction, formation of activated complex in endothermic reaction requires:

The thermal decomposition of nitrogen pentoxide N₂O₅_(g) → N₂O₄_(g) + ½O₂_(g) in gaseous state follows which one of the following order of reaction?

For the reaction A_(s) → product, when the concentration of A doubles, the rate of reaction increased four folds, which means it is:

What is the correct relation between rate and activation energy?

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

If E_f and E_r are activation energies of forward and reverse reaction. The reaction is known to be exothermic then?

The half-life period of zero order reaction is equal to:

For the 1st order decomposition reaction 2N₂O₅ → 2N₂O₄_(g) + O₂_(g) the half-life is given by

For the reaction A + B → C + D, doubling the concentration of both the reactants increases the reaction rate by 8 times and doubling the initial concentration of only B simply doubles the reaction rate. The rate law for the reaction is:

The half-life time for 1st order decomposition of a substance dissolved in CCl₄ is 2.5 hours at 30°C. The amount of substance left after 10 hours if the initial weight of the substance is 160g?

Select the correct rate law from the given data:

Which one of the following is correct about the reaction 2Fe + 3H₂O + O₂ → Fe₂O₃.3H₂O if iron is not 100% pure?

The order of following reaction is: CHCl₃ + Cl₂ → ^(hv)CCl₄ + HCl

As time approaches to zero, then average rate and instantaneous rate:

What is the measure of activation energy in an endothermic reaction?

Unit of k in first order reaction is:

For which reaction is the unit of rate constant "k" the same as that of the reaction rate?

The rate of reaction is defined as:

The rate law equation for a reaction is given as dx/dt= K[FeCl₃][KI]². The reaction is:

In transition state, the reactants are:

Higher the activation energy of the reaction:

If a process cannot be retraced in the backward direction by reversing the controlling factors. It is a/an:

What is the average translational kinetic energy of molecules in a gas at 27°C temperature?

The _ reagent is the reactant that gets consumed first in a chemical reaction and therefore limits how much product can be formed.

The reaction in which rate depends only on one reactant concentrations, although more than one reactants are present in the reaction mixture is known as:

Consider the following reaction:2FeCl_{3 (aq)} + 6KI_(aq)→2Fe_2(aq) + 6KCl_(aq) + I_2(s)Rate = [ FeCl₃]¹[KI]² Choose the correct molecularity and the order of reaction respectively.

Actual yield is a/an:

Consider reversibility in free radical substitution reaction of alkane then Kc value is smallest for:

Reactants in a transition state:

The minimum energy below which no reaction occur in reactant molecules is:

Rate of first order reaction depends on:

The rate constant 'k' is 0.693 min-¹. The half-life for the first-order reaction will be:

2A + B → Product If the reactant 'B' is in excess, the order of reaction with respect to 'A' in given rate law is: Rate = k[A]²[B] is:

By considering Arrhenius equation, the graph between '1/T' and 'log K', which of the following graph represents the relationship between log K and 1/T?

For the reaction 2NO + O₂ ⇌ 2NO₂, the rate equation for the forward reaction is:

If the reactant or product of a chemical reaction can absorb ultraviolet, visible or infrared radiation, then the rate of a chemical reaction can best be measured by which one of the following methods?

According to collision theory of bimolecular reaction in gas phase, the minimum amount of energy required for an effective collision is known as:

It is experimentally found that a catalyst is used to:

The reaction rate in forwarding direction decreases with the passage of time because:

In some reactions, a product formed acts as a catalyst. The phenomenon is called:

When the change in concentration is 6 x 10^-4 mol dm^-3 and time for that change is 10 seconds, the rate of reaction will be:

The half-life of N₂O₅ at 0°C is 24 minutes. How long will it take for a sample of N₂O₅ to decay to 25% of its original concentration?

If a graph is plotted with the concentration data of a reactant in a chemical reaction, then the curve is?

For 3rd order reactions, the half-life is:

Drawing a graph between concentration change with time gives us a:

The average and instantaneous rate can be equal:

The rate of chemical reactions helps in designing industrial processes which is:

The rate of reaction between two specific time intervals is?

Spectrometry is used when reactants and products absorb:

Near the completion of a chemical reaction, the average rate is:

Slope of the curve can be determined by:

Rate of reaction can be studied graphically by plotting time and:

In a rate expression the bracket [ ] indicates:

The slope determined by drawing a right angled triangle drawn with tangent as hypotenuse will be same:

The rate expression has a negative sign for?

The half-life for first order reaction is independent of initial:

In one second if the concentration changes from 0.1 to 0.25 then the rate will be:

Physical methods of finding the rate of reaction always involve:

The rate determining step of a chemical reaction which occurs in more than one step depends upon the:

Rate = k [NO][O₃], the order of reaction of this reaction is _.

A substance which does not appear in balanced chemical reaction is called:

The mechanism of reaction can be understood by _.

In the rate equation R=k[A]^a [B]^b, a and b as exponents decide the:

The half-life period for a first-order reaction is independent of _.

As the hydrolysis of ester proceeds, more and more acid is formed giving a _.

As the time interval approaches zero, the average and instantaneous rate become:

Hydrolysis of Tertiary Butyl bromide is a _.

In exothermic reactions forward reactions need?

The rate of reaction can have a value which is?

Limiting reactant controls the amount of?

How much percentage of reactants is converted into products during half-life period?

"Specific Rate" constant changes its value with?

The rate of reaction can be calculated by calculating?

The rate equation is a(n):

Higher order reactions have a half-life _.

Zero-order reactions do not depend upon the concentration of _.

Hydrolysis means a reaction with _.

Which processes help in designing industrial rate of chemical reactions?

Rate of a reaction is dependent on:

Reaction intermediate:

For a certain chemical reaction, the slope of the plot was determined and plotted against the concentration and a straight line was obtained. It indicates that the reaction is of:

The half-life of Uranium is _

Rate determining step is also called?

The positive sign in the rate expression for products depicts?

Half-life can be found out for a reaction of?

dx/dt is rate of change of concentration with respect to?

Rate of reaction has _.

The rate of reaction between a specific interval of time is called as_.

What is the unit of slope obtained from Arrhenius equation?(slope=-Ea/2.303R)

Which of the following is a fast reaction?

Which substance increases the rate of reaction but recovers at the end of reaction?

An effective collision between the molecules is primarily responsible for_.

Which of the following is NOT true about rate of reaction?

In the rate equation, Rate=k[A]ᵃ[B]ᵇ, the sum of terms a and b is called as_?

How does catalyst increase the rate of reaction?

Arrhenius Constant "A" depends upon:

For a chemical reaction, particles must collide with:

Before a collision, molecules:

Which of the following is a factor affecting the rate of reaction?

Half-life for 1st order reactions is:

What does the Arrhenius equation explain?

To avoid long reaction time and to get equilibrium mixture quickly we add?

Enzymes are also called as _.

Energy is absorbed?

Half Life α =1/a(n-1) where n is:

What is the value of molecularity and order of SN₁ reactions?

Rate constant is denoted by?

The order of reaction for which half-life is inversely proportional to the concentration of reaction is?

The number of reacting molecules which change their concentration in a chemical change is called:

The substance that is attached to the enzyme at specific place and converted into product is called as?

If the energy of activation of a chemical reaction is very low, the rate of that chemical reaction is observed to be very high because?

The decomposition of phosphorus pentachloride in the presence of moisture takes place by the following mechanism. The rate equation for this reaction will be:

Specific Rate constant is also known as:

The change in concentration of reactants or products per unit time is:

Activated complex is formed due to:

Instantaneous rate of reaction is the rate at any:

Type of reactants or product decides the nature of method adapted for finding:

In general Photochemical reactions are of order:

In a zero-order reaction, the rate is independent of:

What is the order of the following reaction: 2NO +O₂ 2NO₂

75% of a first order reaction is completed in 36 minutes. What is the half life of the reaction?

A catalyst is a substance which:

The rate constant of a first-order reaction is 3 x 10^-6 per second. If the initial concentration is 0.10 M, the initial rate of reaction is:

As the concentration of reactant increases, the rate of reaction also increases, it is because:

If energy of the activated complex is close to energy of reactants, it means that the reaction is:

The unit of rate constant is same as that of rate of reaction in:

In a reversible reaction, catalyst lowers the activation energy of the:

The effect of temperature on the rate of a reaction is given by:

For a reaction 2A + 3B C. The rate law expression is given by rate = K [A]¹[B]². The order of the reaction with respect to A, B and overall order of reaction are:

Half life period of the first order reaction depends upon:

For the reaction, A_(g) products: When the concentration of A_(g) doubles, the rate of reaction increases four folds, which means it is:

The study of rates of chemical reactions and the factors that affect the rates of chemical reactions is known as:

The unit of the rate constant is the same as that of the rate of reaction in:

A catalyst:

The rate of a chemical reaction is directly proportional to the product of active masses of the reactants, it is referred to as:

The chemical reaction in which reactions require high amount of activation energy are generally:

Rate = K [N₂O₅ ] has _ of reaction.

The unit of rate of reaction is:

A certain chemical reaction follows thefollowing rate law: Rate =K [A] [B]² The order of reaction is:

The rate of a gaseous reaction is given by K[A][B]. If the volume of the vessel containing these gases is reduced to 1/4th of the initial volume, the rate of reaction relative to the original rate would be:

If the reaction, P + Q → R + S, is described as being of zero-order with respect to P, it means that:

"The sum of all the exponents to which the molar concentration in terms in the rate equation are raised" defines:

If concentration time graph of a reactant indicates a constant half life, then the order reaction with respect to that reactant is:

Role of a catalyst in a chemical reaction is to:

The rate of a reaction in general can be increased by all the following factors except:

The influence of temperature on reaction rate is predicted by:

For a single step reaction A B + 2C, the rate law is: