1.  1

2.  2

3.  3

4.  0

4

1

Explanation :
No Explanation available for this question

# Rate of reaction can be expressed by Arrhenius equation as k=Ae-E/RT,in this reaction, E represents:

1.  The energy below which colliding molecules will not react

2.  The total energy of the reacting molecules at a temperature T

3.  The fraction of molecules with energy greater than the activation energy of the reaction

4.  The energy above which the colloiding molecules will react

4

The energy below which colliding molecules will not react

Explanation :
No Explanation available for this question

# The decomposition of dimethylether leads to the formation of CH4,H2 and CO and the reaction rate is given by: rate =k[CH3OCH3]3/2The rate of reaction is followed by increase in pressure in a closed vessel and the rate can be expressed in terms of the partial pressure of dimethyl ether, i.e. rate =k(pCH3OCH3)3/2. If pressure is measured in bar and time in minutes, the units of rate constant are:

1.  bar3/2min-1

2.  bar-3/2min-1

3.  bar-1/2min-1

4.  bar-1min-1

4

bar-1/2min-1

Explanation :
No Explanation available for this question

# For a zero order reaction; A→B,a graph of rate vs. time has slope equal to

1.  k

2.  -k/2.303

3.  -2.3030K

4.  Zero

4

Zero

Explanation :
No Explanation available for this question

# A reaction was found to be second order with respect to the concentration of carbon monoxide. If the concentration of carbon monoxide is doubled. With everything else kept the same, the reate of reaction will

1.  Triple

2.  Increase by a factor of 4

3.  Double

4.  Remain unchanged

4

Increase by a factor of 4

Explanation :
No Explanation available for this question

# For the reaction :2O3↔3O2 the rate of reaction is correctly given by the expression

1.  -2/3 d[O3]/dt

2.  -1/3 d[O3]/dt

3.  -1/2 d[O3]/dt

4.  1/2 d[O3]/dt

4

-1/2 d[O3]/dt

Explanation :
No Explanation available for this question

# An exothermic reaction A→B has an activation energy of 17kJ per mole of A. The heat of reaction is 40kJ. The activation energy for the reverse reaction B→A is

1.  23 kJ

2.  97 kJ

3.  57 kJ

4.  17 kJ

4

57 kJ

Explanation :
No Explanation available for this question

# The rate constants for forward and backward reactions of hydrolysis of ethyl acetate are 1.1x10-2 and 1.5x10-3min-1 respectively. The equilibrium constant for the reaction is :

1.  7.33

2.  0.733

3.  0.136

4.  1.36

4

7.33

Explanation :
No Explanation available for this question

# The rate constants k1 and k2 for two different reactions are 1016. e-2000/Tand 1015. e-1000/T respectively. The temperature at which k1=k2 is:

1.  1000 K

2.  2000/2.303 K

3.  1000/2.303 K

4.  2000 K

4

1000/2.303 K

Explanation :
No Explanation available for this question

1.  7.5 min

2.  15 min

3.  30 min

4.  60 min

4