Thermodynamics questions
1906 published questions with worked solutions.
- For an ideal gas, the relation between the enthalpy change and internal energy change at constant temperature is given by
- In which of the following processes of neutralization is the magnitude of H_ neutralisation less than that of H_ ionisation of...
- Which of the reactions defines H_f^ ?
- If combustion of 4 g of CH_4 liberates 2.5 kcal of heat, the heat of combustion of CH_4 is
- The bond energy of H_2 is 104.3 kcal ,mol^ -1 . It means (N= Avogadro's number)
- If the enthalpy change for the reaction CH_4(g)+Cl_2(g) CH_3Cl(g)+HCl(g), H=-25 kcal. Bond energy of C─H is 20 kcal mol⁻¹ greater...
- When a certain amount of ethylene was burnt, 6226 kJ of heat was evolved. If the heat of combustion of ethylene is 1411 kJ, the...
- The dissociation energies of CH_4 and C_2H_6 are respectively 360 and 620 kcal/mol. The bond energy of C─C is
- C_ diamond +O_2(g) CO_2(g); H=-395 kJ …… (i) C_ graphite +O_2(g) CO_2(g); H=-393.5 kJ …… (ii) The H, when diamond is formed from...
- Given, NH_3(g)+3Cl_2(g) NCl_3(g)+3HCl(g); - H_1 N_2(g)+3H_2(g) 2NH_3(g); - H_2 H_2(g)+Cl_2(g) 2HCl(g); H_3 The heat of formation...
- Which value of heat of formation indicates that the product is the least stable?
- For the reactions: C+O_2 CO_2; H=-393 kJ 2Zn+O_2 2ZnO; H=-412 kJ which one is correct?
- Using the data provided, calculate the (multiple) bond energy (kJ mol⁻¹) of a C C bond in C_2H_2. Given that the heat of...
- The following two reactions are known: Fe_2O_3(s)+3CO(g) 2Fe(s)+3CO_2(g); H=-26.8 kJ FeO(s)+CO(g) Fe(s)+CO_2(g); H=-16.5 kJ The...
- The heat of formation of water is exothermic in nature because
- n values in H= U+ nRT may have
- The heat change for the reaction, C(s)+2S(s) CS_2(l) is called
- Heat of neutralization of HF is
- If CH_3COOH+OH^- = CH_3COO^-+H_2O+q_1 and H^++OH^- = H_2O+q_2, then the enthalpy change for the reaction CH_3COOH = CH_3COO^-+H^+...
- 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
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