The number of species participating in the slowest step of the reaction is called molecularity of the reaction.

 The number of species participating in the slowest step of the reaction is called molecularity of the reaction.
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Define Equilibrium state
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Pick out the wrong statement. (A) In a multistep reaction, the slowest step is the rate determining step (B) In general, the rate of a reaction becomes triple for every 10°C rise in temperature (C) Slow chemical reactions have generally high values of activation energy (D) Molecularity of a reaction cannot be zero but the order of a reaction can be zero

Description : Pick out the wrong statement. (A) In a multistep reaction, the slowest step is the rate determining step (B) In general, the rate of a reaction becomes triple for every 10°C rise in temperature (C ... energy (D) Molecularity of a reaction cannot be zero but the order of a reaction can be zero

Last Answer : (B) In general, the rate of a reaction becomes triple for every 10°C rise in temperature

Rate determining step in a reaction consisting of a number of steps inseries is the __________ step.(A) Fastest(B) Slowest(C) Intermediate(D) Data insufficient; can't be predicted

Description : Rate determining step in a reaction consisting of a number of steps inseries is the __________ step. (A) Fastest (B) Slowest (C) Intermediate (D) Data insufficient; can't be predicted

Last Answer : (B) Slowest

Pick out the wrong statemen(A) Autocatalytic reactions are exemplified by microbial fermentation reactions (B) The slowest step has the greatest influence on the overall reaction rate in case of an irreversible series reaction (C) The fractional conversion at any time is same for both the constant as well as the variable volume system in case of an irreversible unimolecular type first order reaction (D) Hydrolysis of ester in presence of alkali or acid is a zero order reaction

Description : Pick out the wrong statemen (A) Autocatalytic reactions are exemplified by microbial fermentation reactions (B) The slowest step has the greatest influence on the overall reaction rate in case of an ... reaction (D) Hydrolysis of ester in presence of alkali or acid is a zero order reaction

Last Answer : (D) Hydrolysis of ester in presence of alkali or acid is a zero order reaction

Pick out the wrong statement. (A) Visible radiation provides the necessary activation energy in photochemical reactions (B) The order and molecularity of a complex reaction may not be the same (C) For a second order reaction, the slope of the graph/plot between rate and (concentration) is equal to the rate constant (k) (D) Molecularity of the reaction is always a whole number greater than zero

Description : Pick out the wrong statement. (A) Visible radiation provides the necessary activation energy in photochemical reactions (B) The order and molecularity of a complex reaction may not be the same (C) For ... rate constant (k) (D) Molecularity of the reaction is always a whole number greater than zero

Last Answer : (B) The order and molecularity of a complex reaction may not be the same

Sum of the powers of the concentration terms in the rate equation is called the __________ of the reaction. (A) Order (B) Overall order (C) Molecularity (D) None of these

Description : Sum of the powers of the concentration terms in the rate equation is called the __________ of the reaction. (A) Order (B) Overall order (C) Molecularity (D) None of these

Last Answer : (B) Overall order

Information about the order of reaction is obtained from its (a) Reaction rate (b) Molecularity (c) Rate equation (d) Half-life period

Description : Information about the order of reaction is obtained from its (a) Reaction rate (b) Molecularity (c) Rate equation (d) Half-life period

Last Answer : Ans:(c)

When could order an molecularity of a reaction i) be Same ii) be different

Description : When could order an molecularity of a reaction i) be Same ii) be different

Last Answer : Ans.: i) Order and molecularity will be same in single step reaction. ii) They will be different if reaction is of two or more steps.

Differentiate between order of reaction and molecularity of reaction.

Description : Differentiate between order of reaction and molecularity of reaction.

Last Answer : Order of reaction  Molecularity 1. It is defined as sum of powers to which concentration terms are raised in rate law ... can be determined, 4. Molecularity of complex reaction can not be determined.

Molecularity of a reaction (A) Is always equal to the overall order of reaction (B) May not be equal to the order of reaction (C) Can’t have a fractional value (D) Both (B) and (C

Description : Molecularity of a reaction (A) Is always equal to the overall order of reaction (B) May not be equal to the order of reaction (C) Can’t have a fractional value (D) Both (B) and (C

Last Answer : (D) Both (B) and (C

The experimentally determined overall order of the reaction, A + B → C + D, is two. Then the (A) Reaction is elementary with a molecularity of 2 (B) Molecularity of the reaction is 2, but the reaction may not be elementary (C) Reaction may be elementary with molecularity of 2 (D) Reaction is elementary but the molecularity may not be 2

Description : The experimentally determined overall order of the reaction, A + B → C + D, is two. Then the (A) Reaction is elementary with a molecularity of 2 (B) Molecularity of the reaction is 2, ... Reaction may be elementary with molecularity of 2 (D) Reaction is elementary but the molecularity may not be 2

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The molecularity and the order of reaction respectively, for the hydrolysis of methyl acetate in presence of acids are (A) 2 & 1 (B) 11 & 2 (C) 2 & 2 (D) 1 & 1

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Molecularity of an elementary reaction, P + Q → R + S is (A) 1 (B) 2 (C) 3 (D) 4

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Last Answer : (D) 4

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A circular plate, a cube and a sphere, all made up of same material and having the same mass, are heated to 300°C and left in a room. Which of them will have the slowest rate of cooling? (1) Circular plate (2) Cube (3) Sphere (4) All will cool at the same rate

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