Thermodynamics questions
1906 published questions with worked solutions.
- For CaCO_3(s) CaO(s) + CO_2(g) at 927°C, H = 176 kJ mol^ -1 ; then E is
- Which one of the following is spontaneous at all temperatures?
- Given that dE = TdS - pdV and H = E + pV. Which one of the following relations is true? **[Kerala CEE 2009]**
- For a chemical reaction, the free energy change ( G) is negative. The reaction is **[J & K CET 2006]**
- The enthalpy of reaction H_2(g)+ 12O_2(g) H_2O(g) is H_1 and that of H_2(g)+ 12O_2(g) H_2O(l) is H_2. Then **[AMU 2006]**
- H_ vap = 30 kJ/mol and S_ vap = 75 J ,mol^ -1 K^ -1 . Find the temperature of vapour at 1 atm.
- According to the equation H = -3264.4 kJ/mol. The energy evolved when 7.8 g of benzene is burnt in air will be **[Manipal 2003]**
- For the reaction, A(s) + 3B(g) 4C(g) + D(l), H and U are related as **[OJEE 2004]**
- The enthalpies of combustion of carbon and carbon monoxide are -393.5 and -283 kJ mol^ -1 respectively. The enthalpy of formation...
- If, (i) C + O_2 CO_2, (ii) C + 12O_2 CO, (iii) CO + 12O_2 CO_2, the heats of reactions are Q, -12, -10 respectively. Then Q is
- I_2(s) I_2(g); H = +40 kcal, S = 80 cal. The sublimation point of I_2(s), in °C, will be
- Standard enthalpy and standard entropy changes for the oxidation of ammonia at 298 K are -382.64 kJ mol^ -1 and -145.6 JK^ -1...
- The amount of energy released when 20 mL of 0.5 M NaOH are mixed with 100 mL of 0.1 M HCl is x kJ. The heat of neutralisation is...
- Which of the following pairs has heat of neutralisation equal to 13.7 kcal? **[DCE 2003]**
- Which of the reactions defines H^ _f? **[IIT JEE 2003]**
- For the reaction, A(g) + 2B(g) 2C(g) + 3D(g), the change of enthalpy at 27°C is 19 kcal. The value of E is **[UP SEE 2006]**
- On the basis of the following thermochemical data, [ _fG^ H^+(aq)=0] H_2O(l) H^+(aq) + OH^-(aq); H = 57.32 kJ H_2(g) + 12O_2(g)...
- For a particular reversible reaction at temperature T, H and S were found to be both +ve. If T_e is the temperature at...
- For a reaction to be spontaneous at all temperatures **[Jamia Millia Islamia 2008]**
- What are the signs of the entropy change ( S), enthalpy change ( H), and free energy change ( G) in the spontaneous combustion...
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