मराठी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

From the rate expression for the following reaction, determine the order of reaction and the dimension of the rate constant. H⁡2⁢O2⁢(aq) + 3I⁢−(aq)+2⁢H⁡+ -> 2⁢H⁡2⁢O(l) + I−3 Rate = k[H2O2][I−]

Advertisements
Advertisements

प्रश्न

From the rate expression for the following reaction, determine the order of reaction and the dimension of the rate constant.

\[\ce{H2O2_{( aq)} + 3I^-_{( aq)} + 2H^+ -> 2H2O_{(l)} + I^-_3}\] Rate = k[H2O2][I−]

संख्यात्मक
Advertisements

उत्तर

Given rate = k[H2O2][I−]

∴ Order of the reaction = 2

Dimension of k = \[\ce{\frac{Rate}{[H2O2] [I-]}}\]

= \[\ce{\frac{(mol L^{-1} s^{-1})}{(mol L^{-1})(mol L^{-1})}}\]

= L mol−1 s−1

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 3: Chemical Kinetics - Exercises [पृष्ठ ८५]

APPEARS IN

एनसीईआरटी Chemistry Part 1 and 2 [English] Class 12
पाठ 3 Chemical Kinetics
Exercises | Q 3.1 (ii) | पृष्ठ ८५
नूतन Chemistry [English] Class 12 ISC
पाठ 3 Chemical Kinetics
'NCERT TEXT-BOOK' Exercises | Q 4.1 (ii) | पृष्ठ २७७

संबंधित प्रश्‍न

A → B is a first order reaction with rate 6.6 × 10-5m-s-1. When [A] is 0.6m, rate constant of the reaction is

  • 1.1 × 10-5s-1
  • 1.1 × 10-4s-1
  • 9 × 10-5s-1
  • 9 × 10-4s-1

What is pseudo first order reaction? Give one· example of it.


From the rate expression for the following reaction, determine the order of reaction and the dimension of the rate constant.

\[\ce{3NO_{(g)} -> N2O_{(g)}}\] Rate = k[NO]2


From the rate expression for the following reaction, determine the order of reaction and the dimension of the rate constant.

\[\ce{C2H5Cl_{(g)} -> C2H4_{(g)} + HCl_{(g)}}\] Rate = k[C2H5Cl]


A reaction is first order in A and second order in B. How is the rate affected on increasing the concentration of B three times?


A reaction is first order in A and second order in B. How is the rate affected when the concentrations of both A and B are doubled?


Write the principle behind the following methods of refining:

Hydraulic washing


Rate of reaction for the combustion of propane is equal to:

\[\ce{C3H8_{(g)} + 5O2_{(g)} -> 3CO2_{(g)} + 4H2O_{(g)}}\]


Consider the reaction A ⇌ B. The concentration of both the reactants and the products varies exponentially with time. Which of the following figures correctly describes the change in concentration of reactants and products with time?


For which type of reactions, order and molecularity have the same value?


Assertion: Order of the reaction can be zero or fractional.

Reason: We cannot determine order from balanced chemical equation.


Assertion: Rate constants determined from Arrhenius equation are fairly accurate for simple as well as complex molecules.

Reason: Reactant molecules undergo chemical change irrespective of their orientation during collision.


A catalyst in a reaction changes which of the following?


The role of a catalyst is to change


The rate of a chemical reaction double for every 10° rise in temperature. If the temperature is raised. by 50°C, the rate of relation by about:-


The number of molecules of the reactants taking part in a single step of the reaction is indicative of ______.


Identify the order of reaction from the following unit for its rate constant:

L mol–1 s–1


For a chemical reaction starting with some initial concentration of reactant At as a function of time (t) is given by the equation,

`1/("A"_"t"^4) = 2 + 1.5 xx 10^-3` t

The rate of disappearance of [A] is ____ × 10-2 M/sec when [A] = 2 M.

[Given: [At] in M and t in sec.]
[Express your answer in terms of 10-2 M /s]
[Round off your answer if required]


A reaction is second order with respect to a reactant. How is the rate of reaction affected if the concentration of the reactant is reduced to half?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×