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4,063 questions found — Page 121 of 163
MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

For the reaction 4NH 5O 4NO 6H O, -> if the rate of disappearance of NH3 is 3.6 × 10–3 mol L-1 s–1, what is the rate of formation of H2O?

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

Similarly, the stoichiometric coefficient of D, A and B is 3,4 and 1 respectively. Thus using the concept, B D A C -> So, answer b is correct.

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

The rate of a reaction is expressed in different ways as follows : 1 d[C] 1 d[D] 1 d[A] d[B]. 2 dt 3 dt 4 dt dt The reaction is

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

In the reaction -> aq aq l l BrO Br H Br H O The rate of appearance of bromine (Br2) is related to rate of disappearance of bromide ions as following: (AIPMT 2009)

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

Choose the correct value of d NH dt for the reaction, N 3H 2NH -> (a) d H dt (b) d H dt (c) d N dt (d) d N dt Ans. (a) Sol. d NH d H dt dt

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

In order to express the rate at a particular moment of time we determine the …A… rate. Here A refers to

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

When the concentrations of gases is expressed in terms of their partial pressures, then the units of the rate of reaction will be

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

Find the value of from the graph shown below (a) av R r f (b) av R R r t t (c) av d R r dt (d) av R R r t t Ans. (d) Sol. av R R r t t

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

In the graph, slope is (a) inst d R r dt (b) inst d R r d P (c) inst d P r dt (d) inst d P r dt Ans. (c) Sol. Slope ⇒ inst d P r dt

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

...A… depends upon the change in concentration of reactants or products and the time taken for that change to occur. Here, A is

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

The correct expression is

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

The square brackets in the expression Δ[R] = [R]2 – [R]1 are used to express …A… Here, A is

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

Speed of a reaction can be defined as

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

The units of rate of reaction are

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

Rate of a reaction

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

The rate of reaction is defined as

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

For a reaction R ⟶ P, the concentration of a reactant changes from 0.05 M to 0.04 M in 30 minutes. What will be the average rate of reaction in minutes?

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

For the reaction A + 2B ⟶ C, the rate of reaction at a given instant can be represented by (a) d[A] 1 d[B] d[C] dt 2 dt dt

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

For the reaction. 2 HI ⟶ H2 + I2, the expression [ ] d HI dt represents

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

In a reaction 2HI ⟶ H2 + I2, the concentration of HI decreases from 0.5 mol L–1 to 0.4 mol L–1 in 10 minutes. What is the overall rate of reaction during this interval?

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

Consider the reaction, 2N O 4NO O . -> In the reaction NO2 is being formed at the rate of 0.0125 mol L–1 s–1. What is the rate of reaction at this time?

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

Chemical kinetics plays an important role in

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

A reaction having equal energies of activation for forward and reverse reaction has: (NEET 2013) (a) G (b) H (c) H G S (d) S

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

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 reacti…

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryChemical kinetics

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: (AIPMT 2012)

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