Thermodynamics questions
1906 published questions with worked solutions.
- A gas at normal temperature is suddenly compressed to one-fourth of its original volume. If C_P C_V = = 1.5, then the increase in...
- Calculate amount of methane formed by liberation of 149.6 kJ of heat using following equation. C_ (s) +2H_ 2(g) CH_ 4(g) H=-74.8...
- If lattice enthalpy and hydration enthalpy of KCl are 699 kJ mol^ -1 and -681.8 kJ mol^ -1 respectively. What is the enthalpy of...
- Calculate G^0 for the reaction Mg_ (s) +Sn^ ++ _ (aq) Mg^ ++ _ (aq) +Sn_ (s) if E^0_ cell is 2.23 V
- The enthalpy of combustion of cyclohexane, cyclohexene and H_2 are respectively -3920, -3800 and -241 KJ mol^ -1 . the enthalpy...
- Calculate the enthalpy change of the reaction H_2 (g) + Cl_2(g) 2HCl(g) if bond energies (kJ mol^ -1 ) H-H = 436 Cl-Cl = 242,...
- For a certain reaction H = -50 kJ and S = -100 J/K find the temperature so that the reaction is spontaneous
- A carnot engine operates with source at 227°C and sink at 27° C. If the source supplies 50 kJ of heat energy, the work done by...
- For an adiabatic process, which one of the following is 'WRONG' statement?
- Two moles of an ideal gas expand freely and isothermally from 5 dm^3 to 50 dm^3 . What is the value of H ?
- A Carnot engine has the same efficiency between (i) 100 K and 600 K and (ii) T K and 960 K. The temperature T in kelvin of the...
- One mole of an ideal gas performs 900 J of work on surrounding. If internal energy increases by 625 J, find the value of ?
- Calculate the work done in the following reaction at 300 K and at constant pressure (R = 8.314 J K^ -1 mol^ -1 ) 4 HCl_ (g) + O_...
- The pressure and density of a diatomic gas ( = 7 5 ) changes adiabatically from (P, ) to (P', '). If ' = 32 then p' p should be
- A ideal refrigerator has freezer at a temperature of -13^ C. The coefficient of performance of the engine is 5. The temperature...
- Calculate the PV type of work for the following reaction at 1 bar pressure. C_3H_ 6(g) + HCl_ (g) C_3H_7Cl_ (g) (150 mL) (150mL)...
- Which from the following thermodynamic properties is a path function?
- For reaction A + B products H is -84.2 kJ and S is -200 JK^ -1 . Calculate the highest value of temperature so that the reaction...
- The efficiency of a heat engine is ' ' and the coefficient of performance of a refrigerator is ' '. Then
- If enthalpy change for following reaction at 300 K is +7 kJ mol^ -1 find the entropy change of surrounding? H_2O_ (s) H_2O_ (l)
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