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Why in the redox titration of KMnOX4 vs oxalic acid, we heat oxalic acid solution before starting the titration?

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प्रश्न

Why in the redox titration of \[\ce{KMnO4}\] vs oxalic acid, we heat oxalic acid solution before starting the titration?

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उत्तर

The reaction between \[\ce{KMnO4}\] and oxalic acid is very slow. By raising the temperature we can increase the rate of reaction.

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अध्याय 4: Chemical Kinetics - Exercises [पृष्ठ ५६]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
अध्याय 4 Chemical Kinetics
Exercises | Q III. 49. | पृष्ठ ५६

संबंधित प्रश्न

Explain a graphical method to determine activation energy of a reaction.


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`logk=14.2-(1.0xx10^4)/TK`

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(Given: R = 8.314 JK–1 mol–1)


The activation energy for the reaction \[\ce{2 HI_{(g)} -> H2_{(g)} + I2_{(g)}}\] is 209.5 kJ mol−1 at 581 K. Calculate the fraction of molecules of reactants having energy equal to or greater than activation energy?


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The decomposition of hydrocarbon follows the equation

k = `(4.5 xx 10^11 s^-1) e^(-28000 K//T)`

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(ii) Rate of a reaction increases with decrease in activation energy.

(iii) Rate constant decreases exponentially with increase in temperature.

(iv) Rate of reaction decreases with decrease in activation energy.


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(iii) Catalyst lowers the activation energy.

(iv) Catalyst alters enthalpy change of the reaction.


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The activation energy in a chemical reaction is defined as ______.


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The (i) intercept and (ii) slope of the graph are:


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Statement II: Eutrophication leads to decrease in the level of oxygen in the water bodies.

In the light of the above statements, choose the correct answer from the options given below:


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