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Class XI Chemistry Thermodynamics Quiz 7

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Question 1

One mole of an non ideal gas undergoes a change of state from (2atm,3L,95K) to (4atm,5L,245K) with a change in internal energy of ∆U=30L-atm. The enthalpy change ∆H of the process in L-atm is….

Question 2

A volume of 100ml of a liquid contained in an isolated container at a pressure of 1 bar. The pressure is steeply increased to 100 bar by which the volume of liquid decrease by 1ml. The change in enthalpy ∆H of the liquid is in J

Question 3

For a polyatomic gas molecule SO₃, select the correct statements:

Question 4

∆H°_ƒ of water is – 285.8kJ/mol. If enthalpy of neutralisation of mono acid strong base is – 57.3kJ/mol ∆H_ƒ° of OH – ion will be ….kJ/mol

Question 5

The reaction CH₄(g) + Cl₂(g) → CH₃Cl (g) + HCl (g) ∆H = – 25 kcal

BE C – Cl = 84 kcal

H – Cl = 103kcal

C – H = x

Cl – Cl = y

x : y = 9 : 5

From the given data, what is the bond energy of Cl – Cl bond

Question 6

For any process which is undergone by a system

Question 7

ΔU for a system that does 500cal of work on surroundings and 300cal of heat is absorbed by the system?

Question 8

1 mole of monoatomic ideal gas undergoes a reversible cyclic process. (Given : log2 = 0.3, R = 2 cal/mol.K)

Select correct option(s).

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