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MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

G is the net energy available to do useful work and is a measure of free energy. If a reaction has positive enthalpy change and positive entropy change, under what conditions will the reaction be spontaneous?

MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

2 moles of ideal gas at 27°C temperature is expanded reversibly from 2 lit. to 20 lit. find entropy change. (R = 2 cal/mol K)

MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Which of the following reactions define o f G ? (a) diamond C O g CO g → (b) H g F g HF g → (c) H P O H O 2H PO → (d) SO g O g SO g →

MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

System and surroundings together constitute

MEDIUMMCQ MULTIPLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Thermodynamics is not concerned about____.

MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Gaseous system is placed with pressure P₁, volume V₁ and  temperature  T1,  it  has  undergone  thermodynamic changes where temperature is remaining constant, it is

MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

The state of a thermodynamic system is represented by

MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Which of the following is an example of open system?

MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

According to the first law of thermodynamics, U q w . In special cases the statement can be expressed in different ways. Which of the following is not a correct expression?

MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

In a reaction, all reactant and products are liquid, then (a) H E (b) H E (c) H E

MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

H and E  for the reaction, Fe O s 3H g 2Fe s H O l → at constant temperature are related as (a) H E (b) H E RT (c) H E RT (d) H E 3RT

MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

For the gas phase reaction, PCl g PCl g Cl g Which of the following conditions are correct?

MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Which of the following macroscopic variable is not measurable?

MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

A sample of liquid in a thermally insulated container (a calorimeter) is stirred by a motor. Taking liquid as a system for this process choose the appropriate option:

MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Closed system can exchange (with surroundings)

MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Which of the following is true about isolated system?

MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Which of the following is a state function?

MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

The heat of formation of Fe O s is –824.2 kJ mol–1. ∆H for the reaction. 2Fe O s 4Fe s 3O g → is:

MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

The absolute enthalpy of neutralisation of the reaction: (g) (g) 2(aq) (l) MgO 2HCl MgCl H O → Will be (2005)

MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

The enthalpy of vaporisation of a compound AB at its boiling point (127°C) is 6.4 kJ mol-1. Its entropy of vaporization is

MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Thermodynamics deals with

MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Which of the following is not a state function?

MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Which of the following is not an intensive property?

MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Enthalpy change for the reaction, 4H(g) 2H (g) → is – 869.6 kJ. The dissociation energy of H–H bond is (CBSE AIPMT 2011)

MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and Thermochemistry

Which of the following is a path function?

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