1

AIEEE 2006

MCQ (Single Correct Answer)

+4

-1

An ideal gas is allowed to expand both reversibly and irreversibly in an isolated system. If T

_{i}is the initial temperature and T_{f}is the final temperature, which of the following statements is correct?2

AIEEE 2006

MCQ (Single Correct Answer)

+4

-1

($$\Delta H - \Delta U$$) for the formation of carbon monoxide (CO) from its elements at 298 K is : (R = 8.314 J K

^{–1}mol^{–1})3

AIEEE 2006

MCQ (Single Correct Answer)

+4

-1

The standard enthalpy of formation $$\Delta _fH^o$$ at 298 K for methane, CH

_{4}(g), is –74.8 kJ mol^{–1}. The additional information required to determine the average energy for C – H bond formation would be :4

AIEEE 2006

MCQ (Single Correct Answer)

+4

-1

The enthalpy changes for the following processes are listed below :

Cl

I

ICl(g) = I(g) + Cl(g), 211.3 kJ mol

I

Given that the standard states for iodine and chlorine are I

Cl

_{2}(g) = 2Cl(g), 242.3 kJ mol^{–1}I

_{2}(g) = 2I(g), 151.0 kJ mol^{–1}ICl(g) = I(g) + Cl(g), 211.3 kJ mol

^{–1}I

_{2}(s) = I_{2}(g), 62.76 kJ mol^{–1}Given that the standard states for iodine and chlorine are I

_{2}(s) and Cl_{2}(g), the standard enthalpy of formation for ICl(g) is :Questions Asked from Thermodynamics (MCQ (Single Correct Answer))

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