Thermodynamics questions
1906 published questions with worked solutions.
- The mathematical expression for the standard enthalpy of sublimation is given by _________ (Here, _ sub H^ = _ sublimation H^ , _...
- If the heat of combustion of solid benzoic acid at constant volume is -321.30 kJ at 27 °C, the heat of combustion at constant...
- Values of heats of formation for SiO_2 and MgO are -48.4 and -34.7 kJ respectively. The heat of the reaction 2Mg_ (s) + SiO_ 2(s)...
- The enthalpy of formation of ammonia is -46.0 kJ ,mol^ -1 . The enthalpy for the reaction 2N_ 2(g) + 6H_ 2(g) 4NH_ 3(g) ; is...
- The standard molar heat of formation of ethane, CO_2 and H_2O_ (l) are respectively -21.1, -94.1, and -68.3 kcal. The standard...
- The heat produced during combustion of 7.8 g C_6H_6 at constant volume forming H_2O_ (l) and CO_ 2(g) is 40 kJ at 27 °C. The heat...
- The H_2O_ (g) molecule dissociates as (i) H_2O_ (g) H_ (g) + OH_ (g) ; H = 490 kJ (ii) OH_ (g) H_ (g) + O_ (g) ; H = 424 kJ The...
- In the combustion of 11 g of CO_ 2(g) , 100 kJ of heat is liberated. Heat of combustion of CO_ 2(g) is _________
- The heat of formations of CO_ (g) and CO_ 2(g) are -26.4 kcal and -94.0 kcal respectively. The heat of combustion of carbon...
- 2.1 g of Fe combines with S evolving 3.77 kJ. The heat of formation of FeS in kJ/mol is _________
- The heat of atomization of PH_ 3(g) is 228 kcal ,mol^ -1 and that of P_2H_ 4(g) is 355 kcal ,mol^ -1 . The energy of P-P bond is...
- Standard enthalpy of combustion at 25 °C of hydrogen, cyclohexene ( C_6H_ 10 ) and cyclohexane ( C_6H_ 12 ) are -240, -3800 and...
- Diborane is a potential rocket fuel which undergoes combustion according to the equation B_2H_ 6(g) + 3O_ 2(g) B_2O_ 3(g) +...
- When 2 moles of C_2H_ 6(g) are completely burnt, 3129 kJ of heat is liberated. If _fH for CO_ 2(g) and H_2O_ (l) are -395 and...
- Heat of formation of CO_ 2(g) , H_2O_ (l) and CH_ 4(g) are -94.0, -68.4 and -17.9 kcal respectively. The heat of combustion of...
- Given: (i) S + O_2 SO_2 , H = -298.2 kJ (ii) SO_2 + 1 2 O_2 SO_3 , H = -98.7 kJ (iii) SO_3 + H_2O H_2SO_4 , H = -130.2 kJ (iv)...
- The _fH^ of O_3 , CO_2 , NH_3 and HI are +142.2, -393.3, -46.2 and +25.9 kJ ,mol^ -1 respectively. The order of their increasing...
- The heat evolved in the combustion of benzene is given by C_6H_6 + 7 1 2 O_2 6CO_ 2(g) + 3H_2O_ (l) ; H = -3264.6 kJ. Which of...
- In the combustion of 2.0 g of methane 25 kcal heat is liberated, heat of combustion of methane would be __________
- Calculate the enthalpy of hydrogenation of C_2H_ 4(g) , given that the enthalpy of formation of ethane and ethylene as -30.2 kcal...
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