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The enthalpies of combustion of carbon and carbon monoxide are -393.5 and -283 kJ mol-1, respectively. The enthalpy of formation of carbon monoxide per mole is:

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Important Questions on Thermodynamics

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Chemistry Crash Course NEET>Chapter 4 - Thermodynamics>Level 2>Q 91
With what minimum pressure in kPa of a given volume of an ideal gas Cp.m=7/2R, initially at 400 K and 100 kPa pressure, should be adiabatically compressed in order to raise its temperature to 600 K?
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Chemistry Crash Course NEET>Chapter 4 - Thermodynamics>Level 2>Q 92
Work done in an open vessel at 300 K, when 112 g iron is made to react with dilute HCl is
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Chemistry Crash Course NEET>Chapter 4 - Thermodynamics>Level 2>Q 93
△U equal to:
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Chemistry Crash Course NEET>Chapter 4 - Thermodynamics>Level 2>Q 94
Which of the following reactions is associated with the most negative change in entropy?
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Chemistry Crash Course NEET>Chapter 4 - Thermodynamics>Level 2>Q 95
For a reaction A(g)⇌B(g) at equilibrium. The partial pressure of B is found to be one-fourth of the partial pressure of A. The value of ΔG° of the reaction A→B is _______.
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Chemistry Crash Course NEET>Chapter 4 - Thermodynamics>Level 2>Q 96

For a particular reaction ΔH°=-76.6 KJ and ΔS°=226 JK-1. This reaction is

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Chemistry Crash Course NEET>Chapter 4 - Thermodynamics>Level 2>Q 97
When a certain amount of ethylene was combusted, 5644 kJ heat was evolved. If heat of combustion of ethylene is 1411kJ, the volume of O2 (at NTP) that entered into the reaction is:
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Chemistry Crash Course NEET>Chapter 4 - Thermodynamics>Level 2>Q 98

Look at the following diagram:

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The enthalpy change for the reaction A→B will be