Thermodynamics questions
1906 published questions with worked solutions.
- Bond dissociation enthalpy of H _2, Cl _2 and HCl are 434, 242 and 431 kJ mol ^ -1 respectively. Enthalpy of formation of HCl is
- In thermodynamic processes which of the following statements is not true?
- The values of H and S for the reaction, C(graphite) + CO _2 (g) 2 CO(g) are 170 kJ and 170 JK ^ -1 , respectively. This reaction...
- A monoatomic gas at pressure P_1 and volume V_1 is compressed adiabatically to 1 8 th of its original volume. What is the final...
- Three moles of an ideal gas expanded spontaneously into vacuum. The work done will be :
- For vaporization of water at 1 atmospheric pressure, the values of H and S are 40.63 kJ mol ^ -1 and 108.8 JK ^ -1 mol ^ -1 ,...
- The following two reactions are known Fe _2 O _ 3(s) + 3 CO _ (g) 2 Fe _ (s) + 3 CO _ 2(g) ; H = -26.8 kJ FeO _ (s) + CO _ (g) Fe...
- If U and W represent the increase in internal energy and work done by the system respectively in a thermodynamical process, which...
- For the reduction of silver ions with copper metal, the standard cell potential was found to be +0.46 V at 25^ C . The value of...
- Which of the following alkaline earth metal sulphates has hydration enthalpy higher than the lattice enthalpy?
- Consider the following processes : H (kJ/mol) 1 2 A B : +150 3 B 2 C + D : -125 E + A 2 D : +350 For B + D E + 2 C , H will be :
- A mass of diatomic gas ( = 1.4) at a pressure of 2 atmospheres is compressed adiabatically so that its temperature rise from 27^...
- If the enthalpy change for the transition of liquid water to steam is 30 kJ mol ^ -1 at 27^ C , the entropy change for the...
- Enthalpy change for the reaction, 4 H _ (g) 2 H _ 2(g) is -869.6 kJ . The dissociation energy of H-H bond is :
- The enthalpy of fusion of water is 1.435 kcal/mol . The molar entropy change for the melting of ice at 0^ C
- In which of the following reactions, standard reaction entropy change ( S^ ) is positive and standard Gibb's energy change ( G^ )...
- A reaction having equal energies of activation for forward and reverse reactions has -
- For the reaction, X _2 O _4(l) 2 XO _2(g) U = 2.1 kcal , S = 20 cal K ^ -1 at 300 K Hence G is
- A refrigerator works between 4^ C and 30^ C . It is required to remove 600 calories of heat every second in order to keep the...
- A gas is compressed isothermally to half its initial volume. The same gas is compressed separately through an adiabatic process...
Other chapters
Alcohols, Phenols and EthersAldehydes, Ketones and Carboxylic AcidsAlternating CurrentAminesAnatomy of Flowering PlantsAncient Indian HistoryAnimal KingdomApplication of DerivativesArea Under CurveAromatic Compounds and Aryl HalidesAtomsBasic Mathematics and LogarithmBinomial TheoremBiodiversity and ConservationBiological ClassificationBiomoleculesBiotechnology and Its ApplicationsBiotechnology: Principles and ProcessesBody Fluids and CirculationBreathing and Exchange of GasesCell Cycle and Cell DivisionCell: The Unit of LifeChemical Bonding and Molecular StructureChemical Coordination and Integration