Thermodynamics questions
1906 published questions with worked solutions.
- 1 mole of H_2SO_4 is mixed with 2 moles of KOH , the heat evolved will be
- The bond dissociation energies for F_2 , Cl_2 , Br_2 and I_2 are 37, 58, 46 and 36 kJ ,mole^ -1 respectively. The strongest bond...
- The enthalpy of formation for C_2H_4(g) , CO_2(g) and H_2O( l ) at 25^ C and 1 atm. pressure are 52, -394 and -286 kJ ,mol^ -1...
- Which one of the following reaction defines _fH^0?
- The enthalpy of bond dissociation of H_2(g) , Cl_2(g) and HCl(g) are 104, 58 and 103 kcal mol^ -1 respectively. The enthalpy of...
- If _fH(X), _fH(Y), _fH(R), _fH(S) denote the enthalpies of formation of X, Y, R and S respectively the enthalpy of the reaction....
- Heat of formation H^0_f of an explosive compound is
- If the heat of formation of MH_4 is -1600 kJ , the bond energy of M-H would be :
- The standard heat of formation of diamond is
- Heat evolved in the reaction H_2(g)+Cl_2(g) 2HCl(g) is 182 kJ . The bond enthalpy of H-H , Cl-Cl bond are 430, 242 kJ mol^ -1...
- The H^0_f ( kJ ,mol^ -1 ) for CO_2(g) , CO(g) , N_2O(g) and NO_2(g) are -393, -110, 81 and 34 respectively. What is the value of...
- You are given the following two reactions : 1. CH_4(g)+2O_2(g) CO_2(g)+2H_2O(g) ; [ H=-890.4 kJ ] 2. 2HgO(s) 2Hg( l )+O_2(g) ; [...
- The bond enthalpy of C-C , C=C , H-H and C-H bonds are 350, 600, 400 and 410 kJ mol^ -1 respectively. The enthalpy change for...
- The enthalpy of formation of C_2H_2(g) and C_6H_6(g) at 298 K are 230 and 85 kJ/mol respectively. The enthalpy change, H for the...
- The bond enthalpy of N N , H-H and N-H bonds are 945, 436 and 391 kJ mol^ -1 respectively, enthalpy change for reaction...
- The bond energy of H_2 is 436.4 kJ . This means that
- A hypothetical reaction, A 2B , proceeds through following steps : A C , H=q_1 C D , H=q_2 12D B , H=q_3 The heat of reaction is
- The bond energy of O-H bond is “Y” J ,mol^ -1 . When one mole of water is formed, which of the following takes place?
- Which one of the following expresses Q as the heat of combustion?
- For which one of the following statements, the standards enthalpy is zero?
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