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Class XI Chemistry Thermodynamics 2
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Question 1
ΔU is always positive when
Question 2
Water decomposes by absorbing 286.2 kJ of electrical energy per mole. When H2 and O2 combine to form one mole of H2O, 
of heat is produced. Which law is proved according to thermodynamics?
of heat is produced. Which law is proved according to thermodynamics? Question 3
One mole of an ideal gas expands from 5 bar to 1 bar at 298 K. The work done for a reversible expansion will be
Question 4
A reaction occurs spontaneously if
Question 5
2 mole of ideal gas at 27 °C temperature is expanded reversibly from 2Lto 20 L. Find entropy change (R = 2 cal/mol K) :
Question 6
Standard enthalpy and standard entropy changes for the oxidation of ammonia at 298K are -382.64 kJ mol-1 and -145.6 JK-1 mol-1, respectively. Standard Gibbs energy change for the same reaction at 298 K is.
Question 7
Bond dissociation enthalpy of H2, Cl2 and HCl are 434, 242 and 431 kJ mol-1 respectively. Enthalpy of formation of HCl is
Question 8
Enthalpy change for the reaction,
The dissociation energy of H-H bond is
The dissociation energy of H-H bond is
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Nov 4NEET & AIIMS
