Activation Energy
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Q.
In an exothermic reaction A→B, the activation energy of reverse reaction is twice that of forward reaction. If enthalpy of the reaction is -80 kJ mol−1, the activation energy of the reverse reaction is :
80.0kJ mol−1
60.0kJ mol−1
40.0kJ mol−1
160.0kJ mol−1
Q. A reaction having equal energies of activation for forward and reverse reactions has
- ΔH=0
- ΔH=ΔG=ΔS=0
- ΔS=0
- ΔG=0
Q. Gas molecule have rms velocity of its molecule as 1000m/s.What is the average velocity of the molecule?
Q.
The activation energy of a reaction can be determined from the slope of which of the following graphs?
- ln K vs T
- TlnKvslT
- lnKTvsT
- ln K vs 1T
Q.
For an endothermic reaction, energy of activation is Ea and enthalpy of reaction is ΔH (both of these in kJ/mol). Minimum value of Ea will be:
Less than ΔH
More than ΔH
Equal to zero
Equal to ΔH