Thermodynamics questions
1906 published questions with worked solutions.
- Calculate H in kJ for the following reaction C(g)+O_2(g) CO_2(g). Given that, H_2O(g)+C(g) CO(g)+H_2(g); H=+131 kJ CO(g)+...
- Molar heat of vaporisation of a liquid is 6 kJ mol^ -1 . If the entropy change is 16 J mol^ -1 K^ -1 , the boiling point of the...
- For S = 10 cal mol^ -1 K^ -1 and H = 4 kcal mol^ -1 , a reaction is spontaneous when the temperature can be **[BCECE 2004]**
- Which of the following is correct for the reaction H = +ve and S = +ve?
- E^ of combustion of iso-butylene is -X kJ mol^ -1 . The value of H^ is
- If G is negative, the reaction will be **[MP PET 2010]**
- The enthalpy change ( H) for the process N_2H_4(g) 2N(g)+4H(g) is 1724 kJ mol^ -1 . If the bond energy N-H in ammonia is 391 kJ...
- Calculate the entropy change for CH_4(g)+H_2O(g) 3H_2(g)+CO(g), using the following data: Substance: CH_4, H_2O(g), H_2(g), CO(g)...
- The bond energy (in kcal mol^ -1 ) of the C-C single bond is approximately
- The enthalpies of formation of Al_2O_3 and Cr_2O_3 are -1596 kJ and -1134 kJ respectively. H for the reaction, 2Al + Cr_2O_3 2Cr...
- C_2H_2+ 52O_2 2CO_2+H_2O; H=-310 kcal C+O_2 CO_2; H=-94 kcal H_2+ 12O_2 H_2O; H=-68 kcal On the basis of the above equations, H_f...
- Gibb's free energy G, enthalpy H and entropy S are interrelated as **[BITSAT 2007]**
- Molar heat capacity of aluminum is 25 JK^ -1 mol^ -1 . The heat necessary to raise the temperature of 54 g of aluminum (Atomic...
- The amount of heat released when 20 mL of 0.5 M NaOH is mixed with 100 mL of 0.1 M HCl is x kJ. The heat of neutralisation is...
- The decreasing order of bond dissociation energies of C-C, C-H and H-H bonds is **[EAMCET 2007]**
- Heat of combustion of carbon monoxide at constant volume and at 17°C is -67710 cal. The heat of combustion at constant pressure...
- During which phenomenon does entropy decrease? **[Guj CET 2010]**
- How many joules of heat are absorbed when 70.0 g of water is completely vaporised at its boiling point? (L_v = 2260 kJ/kg)
- In any chemical reaction, the quantity that decreases to a minimum is **[UP SEE 2009]**
- Heat of neutralisation will be minimum for which of the following combinations? **[MP PET 2006]**
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