Thermodynamics questions
1906 published questions with worked solutions.
- In a certain thermodynamical process, the pressure of a gas depends on its volume as kV^3. The work done when the temperature...
- The reaction of cyanamide, NH_2CN(s) with oxygen was run in a bomb calorimeter and U was found to be –742.24 kJ mol^ -1 . The...
- The ionization enthalpy of Na^+ formation from Na(g) is 495.8 kJ mol^ -1 , while the electron gain enthalpy of Br is –325.0 kJ...
- A heat engine has an efficiency of 1 6 . When the temperature of sink is reduced by 62°C, its efficiency get doubled. The...
- A monoatomic ideal gas, initially at temperature T_1 is enclosed in a cylinder fitted with a frictionless piston. The gas is...
- At 298.2 K the relationship between enthalpy of bond dissociation (in kJ mol^ -1 ) for hydrogen (E_H) and its isotope, deuterium...
- At 298 K, the enthalpy of fusion of a solid (X) is 2.8 kJ mol^ -1 and the enthalpy of vaporisation of the liquid (X) is 98.2 kJ...
- A refrigerator consumes an average 35 W power to operate between temperature –10°C to 25°C. If there is no loss of energy then...
- The volume V of a given mass of a monoatomic gas changes with temperature T according to the relation V = KT^ 2/3 . The workdone...
- The average S–F bond energy in kJ mol^ -1 of SF_6 is ______. (Rounded off to the nearest integer) [Given : The values of standard...
- For a chemical reaction A + B C + D ( _rH^0 = 80 kJ mol^ -1 ) the entropy change _rS^0 depends on the temperature T (in K) as...
- A Carnot engine whose heat sinks at 27°C, has an efficiency of 25%. By how many degrees should the temperature of the source be...
- 2O_ 3 (g) 3O_ 2 (g). At 300 K, ozone is fifty percent dissociated. The standard free energy change at this temperature and 1 atm...
- A Carnot engine takes 5000 kcal of heat from a reservoir at 727°C and gives heat to a sink at 127°C. The work done by the engine...
- At 25°C and 1 atm pressure, the enthalpies of combustion are as given below : | Substance | H_ 2 | C(graphite) | C_ 2 H_ 6 (g) |...
- Let _ 1 is the efficiency of an engine at T_ 1 = 447^ C and T_ 2 = 147^ C while _ 2 is the efficiency at T_ 1 = 947^ C and T_ 2 =...
- While performing a thermodynamics experiment, a student made the following observations. HCl + NaOH NaCl + H_ 2 O; H = −57.3 kJ...
- A certain amount of gas of volume V at 27°C temperature and pressure 2 10^ 7 Nm^ -2 expands isothermally until its volume gets...
- The enthalpy of combustion of propane, graphite and dihydrogen at 298 K are −2220.0 kJ mol^ -1 , −393.5 kJ mol^ -1 and −285.8 kJ...
- At 25°C and 1 atm pressure, the enthalpies of combustion of benzene (l) and acetylene (g) are −3268 kJ mol^ -1 and −1300 kJ mol^...
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