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Question
Define “zero order reaction”.
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Solution
Zero order reaction is the reaction whose rate is independent of the reactant concentration and remains constant throughout the course of the reaction.
RELATED QUESTIONS
In a first order reaction x → y, 40% of the given sample of compound remains unreacted in 45 minutes. Calculate rate constant of the reaction.
Write two factors that affect the rate of reaction.
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From the rate expression for the following reaction, determine the order of reaction and the dimension of the rate constant.
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Mention the factors that affect the rate of a chemical reaction.
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In any unimolecular reaction:
(i) only one reacting species is involved in the rate determining step.
(ii) the order and the molecularity of slowest step are equal to one.
(iii) the molecularity of the reaction is one and order is zero.
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(i) order of overall reaction is same as molecularity of the slowest step.
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(iii) order of overall reaction is greater than molecularity of the slowest step.
(iv) molecularity of the slowest step is never zero or non interger.
For which type of reactions, order and molecularity have the same value?
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For a general reaction A → B, plot of concentration of A vs time is given in figure. Answer the following question on the basis of this graph.
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(ii) What is the slope of the curve?
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Reason: Reactant molecules undergo chemical change irrespective of their orientation during collision.
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Identify the order of reaction from the following unit for its rate constant:
L mol–1 s–1
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The following data was obtained for chemical reaction given below at 975 K.
\[\ce{2NO(g) + 2H2(g) -> N2(g) + 2H2O(g)}\]
| [NO] | [H2] | Rate | |
| Mol L-1 | Mol L-1 | Mol L-1 s-1 | |
| (1) | 8 × 10-5 | 8 × 10-5 | 7 × 10-9 |
| (2) | 24 × 10-5 | 8 × 10-5 | 2.1 × 10-8 |
| (3) | 24 × 10-5 | 32 × 10-5 | 8.4 × 10-8 |
The order of the reaction with respect to NO is ______. (Integer answer)
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Reason (R): For a complex reaction, molecularity has no meaning.
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?
