19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Rate of a reaction can be expressed as I. The rate of decrease in concentration of any one of the reactants. II. The rate of increase in concentration of any one of the products. Which of the above mentioned statement…
The rate of formation of ammonia by the reaction : N2 + 3 H2 ⟶ 2 NH3 is expressed as d[NH ] dt = 2.5 × 10–4 mol L–1 s–1 . The rate of consumption of H2 expressed as d[H ] dt will be
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?
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.
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
For a hypothetical reaction, R -> products; rate k R . The negative sign used in the rate expression indicates
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
In order to express the rate at a particular moment of time we determine the …A… rate. Here A refers to
When the concentrations of gases is expressed in terms of their partial pressures, then the units of the rate of reaction will be
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
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
...A… depends upon the change in concentration of reactants or products and the time taken for that change to occur. Here, A is
The correct expression is
The square brackets in the expression Δ[R] = [R]2 – [R]1 are used to express …A… Here, A is
Speed of a reaction can be defined as
The units of rate of reaction are
Rate of a reaction
The rate of reaction is defined as
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?
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
For the reaction. 2 HI ⟶ H2 + I2, the expression [ ] d HI dt represents
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?
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?
Chemical kinetics plays an important role in
In the equilibrium 2NH N 3H , 6 moles of is taken in 10 L flask. If concentration of at equilibrium is x, then concentration of at equilibrium is (DUMET 2008)