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Class XI Chemistry Thermodynamics Quiz 2
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Question 1
An amount of Q of heat is added to a monoatomic ideal gas in a process in which the gas performs a work of Q/2 on its surroundings. The molar heat capacity of gas in cal/K-mol for the process is.
Question 2
The internal energy change in the conversion of 1mole of the calcite form of CaCO3 to the aragonite form is +0.21kJ. The enthalpy change in J in the conversion at 2.7 bars is (The densities of the solids calcite and aragonite are 2.7gm/cc and 3gm/cc, respectively)
Question 3
When two moles of ethane are completely burnt 3120kJ of heat is liberated. Calculate the heat of formation ∆H°f for CO2 (g) and H2O (l) are – 395 and – 286 kJ respectively.
Question 4
For which of the following change ∆H≠∆E?
Question 5
Which of the following process will lead to decrease in entropy of the system?
Question 6
At the most probable state of a system, the entropy of the system is
Question 7
The molar heat capacity of is 10 cals at 1000 K. The change in entropy associated with cooling of 32 g of vapour from 1000 K to 100 K at constant pressure will be :
(D = deuterium, at. mass = 2 u)
(D = deuterium, at. mass = 2 u)
Question 8
The increase in Gibbs free energy in KJ of 13g of ethanol(density=0.78gm/cc) when the pressure is increased isothermally from 1 bar to 3001 bar is:
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Nov 15JEE & BITSAT