Thermodynamics questions
1906 published questions with worked solutions.
- The standard enthalpy of formation of NH_3 is -46.0 kJ mol^ -1 . If the enthalpy of formation of H_2 from its atoms is -436 kJ...
- Calculate the bond enthalpy of Xe - F bond as given in the equation, XeF_4(g) Xe^ + (g) + F^ - (g) + F_2(g) + F(g) ; _rH = 292...
- Which of the following statement is incorrect about the equation? C_2H_5OH(l) + 3O_2(g) 2CO_2(g) + 3H_2O(l) , _rH^ = -1367 kJ...
- Calculate the enthalpy of vaporisation of I_2 if the sublimation energy and enthalpy of fusion of I_2 is 57.3 kJ mol^ -1 and 15.5...
- For the reactions A B , H = +24 kJ/mol and B C ; H = -18 kJ/mol, the decreasing order of enthalpy of A, B, C follows the order
- The ratio of enthalpy of vaporisation and the normal boiling point of a liquid approximately equals to ...(i)... . The above...
- The reaction of cyanamide, NH_4CN(s) , with dioxygen was carried out in a bomb calorimeter, and U was found to be -742.7 kJ mol^...
- Consider the following reactions, (i) 12 N_2(g) + 12 O_2(g) NO(g); _rH^ = 90 kJ ,mol^ -1 (ii) NO(g) + 12 O_2(g) NO_2(g); _rH^ =...
- _f U^ for the formation of CH_4(g) at certain temperature is -393 kJ mol^ -1 . The value of _f H^ is
- An ideal gas is allowed to expand against a constant pressure of 2 bar from 10 L to 50 L in one step. The amount of work done by...
- What would be the heat released when an aqueous solution containing 0.5 mole of HNO_3 is mixed with 0.3 mole of OH^- ? (Enthalpy...
- The standard molar heat of formation of ethane, CO_2 and water (l) are respectively -21.1, -94.1 and -68.3 kcal . The standard...
- The H_f^ of O_3 , CO_2 , NH_3 and HI are 142.2, -393.3, -46.2 and +25.9 kJ per mol, respectively. The order of their increasing...
- One mole of methanol when burnt in O_2 , gives out 723 kJ ,mol^ -1 of heat. If one mole of O_2 is used, what will be the amount...
- H_f^ (298 K) of methanol is given by the chemical equation,
- If the value of C_p for nitrogen gas is 7 J ,K^ -1 ,mol^ -1 , then the value of H on heating 28 g of nitrogen gas from 0^ to 100^...
- A sample of gas absorbs 4000 kJ of heat and surrounding does 2000 J of work on sample. What is the value of U? [MHTCET 2020]
- If 38.55 kJ of heat is absorbed, when 6.0 g of O_2 react with ClF according to the reaction 2ClF(g) + O_2(g) Cl_2(g) + OF_2(g)...
- An ideal gas expands isothermally and reversibly from 10 m^3 to 20 m^3 at 300 K, performing 5.187 kJ of work on surrounding,...
- For the reaction, N_2(g) + 3H_2(g) 2NH_3(g) ; H is equal to [MHTCET 2021]
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