Thermodynamics questions
1906 published questions with worked solutions.
- For the reaction : C _3 H _8(g) + 5 O _2(g) 3 CO _2(g) + 4 H _2 O ( ) at constant temperature, H - E is :
- The densities of graphite and diamond at 298 K are 2.25 and 3.51 g cm^ -3 , respectively. If the standard free energy difference...
- What is the entropy change (in JK^ -1 mol^ -1 ) when one mole of ice is converted into water at 0^ ? (The enthalpy change for the...
- For which one of the following equations is H^ _ react equal to H^ _f for the product ?
- One mole of an ideal gas at an initial temperature of T K does 6 R joules of work adiabatically. If the ratio of specific heats...
- If the bond energies of H-H, Br - Br and H -Br are 433, 192 and 364 kJ mol^ -1 respectively the H^ for the reaction H _2(g) + Br...
- Considering entropy (S) as a thermodynamic parameter, the criterion for the spontaneity of any process is :-
- Standard enthalpy and standard entropy changes for the oxidation of ammonia at 298 K are -382.64 kJ mol^ -1 and -145.6 JK^ -1...
- The work done during the expansion of a gas from a volume of 4 dm^3 to 6 dm^3 against a constant external pressure of 3 atm is :-
- A Carnot engine whose sink is at 300 K has an efficiency of 40%. By how much should the temperature of source be increased so as...
- Identify the correct statement for change of Gibbs energy for a system ( G_ system ) at constant temperature and pressure:-
- Assume each reaction is carried out in an open container. For which reaction will H = E ?
- The enthalpy and entropy change for the reaction: Br _2( ) + Cl _2(g) 2 BrCl (g) are 30 kJ mol ^ -1 and 105 JK ^ -1 mol ^ -1...
- The efficiency of a fuel cell is given by
- Consider the following reactions: (i) H ^+_ (aq) + OH ^-_ (aq) = H _2 O _ (l) , H = -X_1 kJ mol ^ -1 (ii) H _ 2(g) + 1 2 O _ 2(g)...
- Given that bond energies of H-H and Cl-Cl are 430 kJ mol ^ -1 and 240 kJ mol ^ -1 respectively and _f H for HCl is -90 kJ mol ^...
- In which of the following the hydration energy is higher than the lattice energy?
- An engine has an efficiency of 1/6. When the temperature of sink is reduced by 62^ C , its efficiency is doubled. Temperature of...
- If Q, E and W denote respectively the heat added, change in internal energy and the work done in a closed cycle process, then
- Which of the following are not state functions? (I) q + w (II) q (III) w (IV) H - TS
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