The half-life of following first order reaction A → B + C is 10min. The

concentration of A would be reduced to 12.5% of original concentration in

In the given reaction 2A + B →products , it is observed on quadrupling the conc.

of B, rate of reaction increases 16times. The order of reaction with respect to B is

If rate constant for any reaction is equal to rate of reaction at all concentrations. Then the order of reaction will be

The rate of chemical reaction roughly doubles for every 10

oC rise of temperature. If temperature is raised by 20 C, the rate may become

In Rate = k[A][B] the second order reaction become ____ if [A] is in large excess

Determine partial pressure of NO at equilibrium if partial pressure of N2 and O2 are 2 and 8 torr respectively (Kp = 4.0) N2 + O2 2NO

For the reaction A + B C + D one starts with 6 moles A and 7 moles B per dm3. When equilibrium is attained, 4.5 moles of C is formed, what is the value of Kc for the reaction

Kc value for decomposition of HF is 10–13 at 2000°C it means that

At equilibrium, relationship between concentrations of reactants and products

A2 +B2 2AB

If in the above reaction the value kf is 2.0 and kr is 0.1 then calculate the value of Kc for reaction

For endothermic reaction, Ea is activation energy in kJ/mol. The maximum value of

enthalpy of reaction (ΔH) will be

In N2 + 3H2 2NH3 , the yield of product will be minimum if

When 1 mole of HCl is added to 1 molar aqueous solution of H2S then

Correct optimum conditions for synthesis of ammonia by Haber process

Which one will affect both equilibrium position and equilibrium constant?

Ksp values of four salts are given, which is least soluble in water

The value of Kc for endothermic reversible reaction

Select the buffer which is not acidic

A buffer is prepared by mixing the solutions of equimolar acetic acid and sodium

acetate. The pH should be equal to

Solubility product of a salt AB is 1.6×10^–7mol2/ dm^6, what will be its solubility(mol/dm^3)

Following is the condition of reversible reaction that is not affected by pressure

(where ∆n = number of moles of product–number of moles of reactants)

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

When the change in concentration is 6×10^–5 moldm^-3 and time for that change is

100 seconds, the rate of reaction will be

For reaction A+2B →C, if concentration of A and B is doubled, then rate of reaction

will increase

Half-life of 1st order reaction A →B is 0.693/2

seconds its rate constant is

Rate of first order reaction depends on ______

For which order of reaction rate constant has same units as rate of reaction

Arrhenius equation describes the effect of

Following first order reaction is 50 percent completed in 24 minutes at 300K

2N2O5 → 4NO2 + O2 [N2O5] given = 10g

How many grams of N2O5 will be left behind after 72 minutes?

The rate expression of a reaction is, Rate = k[A][B]2

What happens to rate of reaction if concentrations of A and B are doubled?

If Ef and Eb are the activation energies for forward and backward reaction

respectively. How these can be compared for the exothermic reaction.

The units of second order rate constant are usually expressed as

At zero activation energy (Ea) value of Arrhenius constant A is

For the following reaction 2A(g) + B(g) 3C(g). we can write

Kp and Kc has following relationship Kp = Kc (RT) n

. Here n is equal to

If Ksp = [M+^2]3[X^-3]2

, the chemical formula of compound is

Which relationship correctly represent that precipitation occurs.

The term common ion effect is used to describe the behavior of a solution in which

________ ion is produced by __________ compounds

If Kc has every small value, the extent of reaction in the forward direction is

All of the following methods are used to calculate the rate of reaction except one

Arrhenius equation describes the effect of