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Standard XII

Chemistry

Order of Reaction

Which of the ...

Question

Which of the following statements are true?

(i) Order and molecularity may be equal for some reactions.
(ii) Order can be a fraction.
(iii) molecularity can be a fraction.
(iv) molecularity is always a whole number.

i, ii, iii

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iii, iv

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i, ii, iv

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ii, iv

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Solution

The correct option is A i, ii, iv
In some reaction molecularity (theoretical value) may be equal to the order of a reaction (experimental value).
The order of a reaction may be fractional, zero, positive or negative.
Molecularity can never be fractional.

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Similar questions

Q. Which of the following statement is/ are correct?
(i) Molecularity of a reaction cannot be fractional.
(ii) Molecularity of a reaction cannot be more than three.
(iii) Molecularity of a reaction cannot be obtained from balanced chemical equation.
(iv) Molecularity of a reaction may not be equal to the order of the reaction.

Which of the following statements are applicable to a balanced chemical equation of an elementary reaction?
(a) Order is same as molecularity
(b) Order is less than the molecularity
(c) order is greater than the molecularity
(d) Molecularity can never be zero

Q. If

I I I

stands for

2,

I I I I

for

3,

and

I I

for

1,

solve the following :

I I - I I I I + I I I + I I I I I =

Q. Which of the following statements are correct?

(i) Law of mass action and rate law expressions are same for single step reaction.
(ii) Order of the slowest elementary reaction of a complex reaction gives the order of the complex reaction.
(iii) Both order and molecularity have normally a maximum value of 3.
(iv) Molecularity of a complex reaction

A + 2 B \to C

is 3.

Three different circuits (I, II and III) are constructed using identical batteries and resistors of R and 2R ohm.

What can be said about current I in arm AB of each circuit?

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Which of the following statements are true?(i) Order and molecularity may be equal for some reactions.(ii) Order can be a fraction.(iii) molecularity can be a fraction.(iv) molecularity is always a whole number.

The correct option is A i, ii, ivIn some reaction molecularity (theoretical value) may be equal to the order of a reaction (experimental value). The order of a reaction may be fractional, zero, positive or negative.Molecularity can never be fractional.

Which of the following statements are true?

(i) Order and molecularity may be equal for some reactions.
(ii) Order can be a fraction.
(iii) molecularity can be a fraction.
(iv) molecularity is always a whole number.

The correct option is A i, ii, iv
In some reaction molecularity (theoretical value) may be equal to the order of a reaction (experimental value).
The order of a reaction may be fractional, zero, positive or negative.
Molecularity can never be fractional.