Electrochemistry and Chemical Kinetics

Specific conductance of 0.1 M nitric acid is 6.3 ˣ 10⁻² ohm⁻¹ cm⁻¹.The molar conductance of solution is

How many coulombs of electricity are required for the reduction of 1 mol of MnO₄⁻ to Mn²⁺

The amount of copper deposited by one Faraday current will be maximum in an acidic solution of one litre of

A solution of nickel sulphate in which nickel rod is dipped is diluted 10 times. the reduction potential of Ni at 298 K

Which one of the following has the highest molar conductivity

Coulomb is equal to ….

The standard emf for the cell reaction, 2Cu⁺(aq) → Cu(s) + Cu²⁺(aq) is +0.36 V at 298 K. The equilibrium constant of the reaction is

The unit of ionic mobility is

Which of the following metal has the biggest tendency for the half reaction

The resistance of 1N solution of acetic acid is 250 ohm, when measured in a cell of cell constant 1.15 cm⁻¹. The equivalent conductivity in ohm⁻¹ cm equiv⁻¹ 1N acetic acid is

In the electrolysis of water, one faraday of electrical energy would evolve

The conductivity of strong electrolyte

Hydrolysis of an ester in an alkaline medium is

According to law of mass action rate of a chemical reaction is proportional to

The extra amount of energy, which the molecules of the reactants have to absorb, so that their energy becomes equal to the threshold energy, is called

The given reaction 2FeCl₃ + SnCl₂ → 2FeCl₂ + SnCl₄ is an example of

For a first order reaction, the half -life period is independent of

How enzymes increases the rate of reaction

The rate of reaction between two reactants A and B decreases by a factor of 4 if the concentration of reactant B is doubled. The order of this reaction with respect to reactant B is

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

In a zero-order reaction. for every 10° C 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

Rate constants of some reaction are given below. predict which one indicates third order of reaction

The plot of concentration of the reactant vs time for a reaction is a straight line with a negative slope. This reaction follows a

For a chemical reaction X → Y, it is found that rate of the reaction is increased by a fraction 6.25 when the concentration of X is increased by a fraction of 2.5. The order of reaction with respect to X is

In the chemical reaction
2SO₂ + O₂ ⇌ 2SO₃,
increasing the total pressure leads to

For the reaction R → P a graph of [R] against time is found to be a straight line with negative slop. What is the order of reaction

The rate of reactions exhibiting negative activation energy

Certain bimolecular reactions which following first order kinetics are called

Order of reaction is decided by

Temperature coefficient of a reaction is 2. When temperature is increased from 30⁰C to 100⁰C, rate of the reaction increases by

The activation energy of a reaction at a given temperature is found to be 2.303 RT J mol⁻¹.The ratio of rate constant to the Arrhenius factor is

75% of a first order reaction was completed in 32 min.When was 50% of the reaction completed

During the decomposition of H₂O₂ to give oxygen, 48 g O₂ is formed per minute at a certain point of time. The rate of formation of water at this point is

A substance with initial concentration of a mol dm⁻³ follows zero order kinetics. The time is takes for the completion of the reaction is (k = rate constant)

If the initial concentration of the reactant is doubled, the time for half reaction is also doubled. Then the order of the reaction is

The half-life of a reaction is inversely proportional to the square of the initial concentration of the reactant. Then the order of the reaction is

For a first order reaction, the time taken to reduce the initial concentration by a factor of 1/4 is 20 minutes. The time required to reduce initial concentration by a factor of 1/16 is

The unit of second order reaction rate constant is

Which is correct about zero order reaction

In the reaction : 2N₂O₅ → 4NO₂ + O₂, initial pressure is 500 atm and rate constant k is 3.38 ˣ 10⁻⁵ s⁻¹.After 10 minutes the final pressure of N₂O₅ is

The unit of rate constant depends upon

The mass of an object changes from 0.002 g to 0.00025 g in a time period of 1500 years.The half-life of the object is

Hydrolysis of ester, in an acidic medium, is

The term-dc/dt in a rate equation refers to

The minimum amount of energy required for the reacting molecules to undergo reaction is called

Which one of the following is wrong about molecularity of a reaction