A. The time required to reduce the concentration of the reacting substance to half its initial value
B. Half of the space time of a reaction
C. Half of the residence time of a reaction
D. None of these
Related Mcqs:
- Rate constant for a first order reaction does not depend upon reaction time, extent of reaction and the initial concentration of reactants; but it is a function of reaction temperature. In a chemical reaction, the time required to reduce the concentration of reactant from 100 gm moles/litre to 50 gm moles/litre is same as that required to reduce it from 2 gm moles/litre to 1 gm mole/litre in the same volume. Then the order of this reaction is ?
A. 0
B. 1
C. 2
D. 3 - Half life period of a chemical reaction is proportional to CA0 -1, if the reaction is of _______________ order?
A. First
B. Zero
C. Second
D. Third - For the chemical reaction P → Q, it is found that the rate of reaction doubles as the concentration of ‘P’ is doubled. If the reaction rate is proportional to Cp n, then what is the value of ‘n’ for this chemical reaction ?
A. 0
B. 1
C. 2
D. 3 - What is the order of a chemical reaction in which doubling the initial concentration of the reactants doubles the half life time of the reaction ?
A. 0
B. 1
C. 2
D. 3 - In a chemical reaction, represented by as shown in the bellow figure, it is observed that the (i) Rate of reaction increases by a factor of 4 on doubling the concentration of the reactant. (ii) Rate of reaction increases by a factor of 9 on trebling the concentration of the reactant. Then the rate of the reaction is proportional to(where, CA = concentration of the reactant)_____________________?
A. CA
B. CA2
C. CA3
D. CA4 - The conversion of a reactant, undergoing a first order reaction, at a time equal to three times the half life of the reaction is ?
A. 0.875
B. 0.5
C. 0.425
D. Data insufficient to calculate - The following half life data are available for the irreversible liquid phase reaction A → products. The overall order of reaction is __________________?
A. 0.5
B. 1
C. 1.5
D. 2 - Consider the ‘n’ th order irreversible liquid phase reaction A → B. Which one of the following plots involving half life of the reaction (t1/2) and the initial reactant concentration (CA0) gives a straight line plot ?
A. CA0 Vs t1/2
B. ln CA0 Vs t1/2
C. CA0 Vs ln t1/2
D. ln CA0 Vs ln t1/2 - Half life period of decomposition of a liquid ‘A’ by irreversible first order reaction is 12 minutes. The time required for 75% conversion of ‘A’ is _____________ minutes?
A. 18
B. 24
C. 6
D. 12 - A liquid decomposes by irreversible first order kinetics and the half life period of this reaction is 8 minutes. The time required for 75% conversion of the liquid will be ____________________ minutes?
A. 4
B. 8
C. 12
D. 16
