The rate constant of a reaction increased by 3 times for every 100C rise of temperature uniformly in the range 200C to 800C, if the rate of constant at 300C is K, what is its value at 600C
9k
27k
6k
81k
The decomposition of N2O5 → NO2+NO3 proceeds as a first order reaction, with a half-life period of 30 seconds at a certain temperature.The rate constant of the reaction is
12sec-1
0.00924sec-1
75sec-1
0.0231sec-1
An endothermic reaction A→B has an activation energy 15 kCal/mole and energy of the reaction is 5 kCal/mole. The activation energy of the reaction B→A is
5 K cal/mole
10 K cal/mole
15 K cal/mole
20 K cal/mole
The rate equation for the reaction A+2B→products is rate=K[A][B]2. If the volume of the vessel is decreased to half of the initial volume the reaction rate bears the following relation to the original rate
8 times
4 times
2 times
1/2
The rate of gaseous reaction is give by k[A][B].If the volume of reaction vessel is reduced to 1/4 of initial volume the reaction rate relative to the original rate is
1/16
1/8
8
16
Assertion (A): the molecularity of reaction is a whole number other than zero , but generally less than 3 Reactions (R): the order of a reaction is always whole number
Both A and R are false
A is true but R is false
Both A and R are true but R is not the correct explanation of A
Both A and R are true R is the correct explanation to A
The rate of the reaction at 400C is 5 units.The rate of same reaction at 800C is nearly(temperature coefficient)
10 units
40 units
20 units
80 units
Which one of the following equation is correct for the reaction N2(g)+3H2(g)→2NH3(g)
3[d(NH3)/dt]=2[d[H2]/dt]
2[d(NH3)/dt]=3[d[H2]/dt]
2[d(NH3)/dt]=-3[d[H2]/dt]
3[d(NH3)/dt]=-2[d[H2]/dt]
For a given reaction which one is higher than the rest among the following
Normal energy
Activation energy
Threshold energy
Average energy
In a first order reaction,50 minutes time is taken for the completion of 93.75% of a reaction. Half life of the reaction is
10 min
20min
12.5min
25min
Increasing the conc. of the reactant by 27 times, the rate increases by 3 times. What is the order of the reaction?
1
1.33
1/3
2
Assertion(A): The molecularityof reaction is a whole number other than zero, but generally less than 3. Reason(R): The order of a reaction is always a whole number
Both A and R are true and R is the correct explaination to A
Both A and R are true but R is not the correct explaination of A
The experimental data for the reaction 2NO(g)+Cl2(g)→2NOCl(g) are given below Expt [Cl2] [NO] Initial rate 1 0.020 0.010 2.4x10-4 2 0.020 0.030 2.16x10-3 3 0.040 0.030 4.32x10-3 What is the order of the reaction
0
3