Chapter 7 – Chemical Kinetics and Nuclear Chemistry (Level 1 and Level 2)
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A catalyst lowers the activation energy for a certain reaction from 83.314 to 75 KJ mol^−1 at 500 K . What will be the rate of reaction as compared to uncatalysed reaction ? Assume other things being equal.
03
Jun
A catalyst lowers the activation energy for a certain reaction from 83.314 to 75 KJ mol^−1 at 500 K . What will be the rate of reaction as compared to uncatalysed reaction ? Assume other things being equal. The temperature coefficient of a reaction is : June 3, 2021 Category: Chapter 7 - Chemical Kinetics [...]
For the first order reaction A→B+C , carried out at 27∘ C . If 3.8×10^−16% of the reactant molecules exists in the activated state , the Ea (activation energy) of the reaction is:
03
Jun
For the first order reaction A→B+C , carried out at 27∘ C . If 3.8×10^−16% of the reactant molecules exists in the activated state , the Ea (activation energy) of the reaction is: carried out at 27∘ C . If 3.8×10^−16% of the reactant molecules exists in the activated state For the first order reaction [...]
Which of the following explains the increases of the reaction rate by catalyst ?
03
Jun
Which of the following explains the increases of the reaction rate by catalyst ? Which of the following explains the increases of the reaction rate by catalyst ? June 3, 2021 Category: Chapter 7 - Chemical Kinetics and Nuclear Chemistry (Level 1 and Level 2) , N Awasthi Physical Chemistry ,
A first order reaction is 50% completed in 20 minutes at 27C and in 5 min at 47C. The energy of activation of the reaction is
03
Jun
A first order reaction is 50% completed in 20 minutes at 27C and in 5 min at 47C. The energy of activation of the reaction is A first order reaction is 50% completed in 20 minutes at 27C and in 5 min at 47C. The energy of activation of the reaction is June 3, 2021 [...]
The rate of a reaction gets doubled when the temperature changes from 27∘C to 37∘C. By what factor will it change for the temperature change from 17∘C to 27∘C ?
03
Jun
The rate of a reaction gets doubled when the temperature changes from 27∘C to 37∘C. By what factor will it change for the temperature change from 17∘C to 27∘C ? The rate of a reaction gets doubled when the temperature changes from 27∘C to 37∘C. By what factor will it change for the temperature change [...]
A homogenous catalytic reaction takes place through the three alternative plots A, B, and C shown in the given figure. Which one of the following indicates the relative ease with which the reaction can take place?
03
Jun
A homogenous catalytic reaction takes place through the three alternative plots A, B, and C shown in the given figure. Which one of the following indicates the relative ease with which the reaction can take place? A homogenous catalytic reaction takes place through the three alternative plots A and C shown in the given figure. [...]
The temperature coefficient of a reaction is :
03
Jun
The temperature coefficient of a reaction is : The temperature coefficient of a reaction is : June 3, 2021 Category: Chapter 7 - Chemical Kinetics and Nuclear Chemistry (Level 1 and Level 2) , N Awasthi Physical Chemistry ,
A reaction rate constant is given by k=1.2×10^14e−2500/RT s^−1. It means
03
Jun
A reaction rate constant is given by k=1.2×10^14e−2500/RT s^−1. It means A reaction rate constant is given by k=1.2×10^14e−2500/RT s^−1. It means June 3, 2021 Category: Chapter 7 - Chemical Kinetics and Nuclear Chemistry (Level 1 and Level 2) , N Awasthi Physical Chemistry ,
The activation energies of the forward and backward reactions in the case of a chemical reaction are 30.5 and 45.5 KJ/mol , respectively . The reaction is:.
03
Jun
The activation energies of the forward and backward reactions in the case of a chemical reaction are 30.5 and 45.5 KJ/mol , respectively . The reaction is:. respectively . The reaction is:. The activation energies of the forward and backward reactions in the case of a chemical reaction are 30.5 and 45.5 KJ/mol June 3, [...]
For reaction A → B , the rate constant K1=A1(e^−Ea1/RT) and the reaction X→Y , the rate constant K2=A2(e^−Ea2/RT) . If A1=10^9, A2=10^10 and Ea1=1200 cal/mol and Ea2 =1800 cal/mol , then the temperature at which K1=K2 is : (Given , R=2 cal/K-mol)
03
Jun
For reaction A → B , the rate constant K1=A1(e^−Ea1/RT) and the reaction X→Y , the rate constant K2=A2(e^−Ea2/RT) . If A1=10^9, A2=10^10 and Ea1=1200 cal/mol and Ea2 =1800 cal/mol , then the temperature at which K1=K2 is : (Given , R=2 cal/K-mol) A2=10^10 and Ea1=1200 cal/mol and Ea2 =1800 cal/mol For reaction A → [...]