Thermodynamics questions
1906 published questions with worked solutions.
- The bond dissociation energies of X_2, Y_2 and XY are in the ratio of 1:0.5:1. H for the formation of XY is -100 kJ ,mol^ -1 ....
- In an isothermal reversible expansion of 2 moles of ideal gas at 300 K from 1.10 L to 11.0 L, the maximum work (done on the gas)...
- The number of reactions among the following for which H is equal to U is _________. 1. N_2(g)+3H_2(g) 2NH_3(g) 2. 2HI(g)...
- How many of the following are state functions? Pressure, Work, Volume, Internal energy, Enthalpy, Entropy, Free energy, Number of...
- When methane burns, 890.3 kJ ,mol^ -1 of energy is released. The calorific value for methane is __________ kJ g⁻¹.
- For a system, U=+400 J and it gives off 200 J of heat. The work done is ________ J.
- One mole of an ideal gas expands isothermally and reversibly from 1 cm³ to 10 cm³ and does 1662.8 J of work. The temperature at...
- When 3.4 10^5 g of ammonia is produced according to the following equation, the heat evolved is _________ 10^5 kJ. (Assume that...
- For a hypothetical reaction, H=-30 kJ ,mol^ -1 and S=-100 J ,K^ -1 mol^ -1 . At what temperature (in Celsius) is the reaction at...
- When one mole of a monoatomic gas is heated from 400 K to 500 K by a reversible and isochoric process, the entropy change is...
- 2.15 g of Fe combines with S evolving 3.90 kJ of energy. The enthalpy of formation of FeS in kJ/mol is __________. [Given: Atomic...
- For the Haber's process for formation of NH₃ at 298 K: N₂+3H₂⇌2NH₃; ΔH=−460 kJ. Which of the following is correct?
- The activation energies of forward and backward reaction: A₂+B₂⇌2AB are 180 kJ mol⁻¹ and 200 kJ mol⁻¹ respectively. The presence...
- Heat of neutralization for the reaction, NaOH+HCl→NaCl+H₂O, is 57.1 kJ mol⁻¹. What will be the heat released when 0.25 mole of...
- The heat liberated when one mole of water is formed by combining hydrochloric acid and sodium hydroxide is 13.7 kcal. The heat...
- The pH of pure water at 25°C and 35°C are 7 and 6 respectively. The heat of formation of water from H⁺ and OH⁻ is:
- The plot of K vs. 1 T shows an intercept of a = 4. The change in standard entropy for the reaction is ....... cal K^ -1 mol^ -1...
- The slope of the line drawn as K_c vs. 1 T for a given reaction is -4. The heat of reaction is ....... cal/mol (take R = 2 cal K^...
- For a reversible reaction A B, _ 10 K = 1.737 - 2500 T (in litre atm unit). The standard entropy change, to the closest value in...
- CuSO_4 5H_2O CuSO_4 2H_2O + 3H_2O. The values of K_p for this reaction at 300 K and 400 K are 10^ -5 atm^3 and 10^ -3 atm^3...
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