Thermodynamics questions
1906 published questions with worked solutions.
- C_6H_ 12 (l)+9O_2(g) = 6H_2O(l)+6CO_2(g); H_ 298K =-936.9 kcal. Thus
- Heat of fusion of a molecular solid is
- Which one of the following bonds has the highest average bond energy (kcal/mol)?
- For which one of the following equations is H^ _ reaction equal to H_f^ for the product?
- Equal volumes of 1M HCl and 1M H_2SO_4 are neutralised by dilute NaOH solution and x and y kcal of heat are liberated...
- The formation of water from H_2(g) and O_2(g) is an exothermic reaction because
- In which case of mixing of a strong acid and a base, each of 1N concentration, is the temperature increase highest?
- The heat of combustion of ethanol determined by a bomb calorimeter is -670.48 kcal ,mol^ -1 at 25°C. What is U at 25°C for the...
- H_2+ 12O_2 H_2O; H=-68.39 kcal ……(i) K+aq. KOH(aq)+ 12H_2; H=-48 kcal ……(ii) KOH+aq. KOH(aq); H=-14 kcal ……(iii) The heat of...
- If G and S for the reaction A(g)+B(g) P(g) at 300 K are -600 cal and -10 cal/K. The U for the reaction in kcal is
- Out of the following properties, how many are path functions? Enthalpy, internal energy, Temperature, Work, Heat, Specific heat
- 'a' moles of Na reacts with sufficient water in an open vessel at 300 K. The work done by the liberated gas H_2 is equivalent to...
- A reversible reaction is carried out at 500 K, where its equilibrium constant is unity. If H^ at 500 K is 4.0 kJ, the value of S^...
- A reaction becomes spontaneous only at 500 K. If H at 500 K is 3.0 kJ, the change in entropy (in J K⁻¹) at 500 K is
- The enthalpy of transition of crystalline boron to amorphous boron at 1500°C is 0.4 kcal/mol. Assuming atomic weight of boron is...
- At 0°C, if the enthalpy of fusion of ice is 1365 cal/mol, the molar entropy change for melting of ice at 0°C is … cal K⁻¹.
- Standard molar heat enthalpy for converting carbon from graphite and diamond form into vapour state directly are 725 and 713 kJ...
- H_f^ of Fe_2O_3 and Al_2O_3 are -189 kJ ,mol^ -1 and -405 kJ ,mol^ -1 respectively. How much heat (in kJ) is given out during the...
- If heat of formation of CaCl_2 and NaCl are -191 and -97.5 kcal ,mol^ -1 , the heat of reaction for CaCl_2+2Na 2NaCl+Ca is …...
- For a gas, the numerical value (in cal) of [ ( H T )_P- ( U T )_V ] is equal to
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