Thermodynamics questions
1906 published questions with worked solutions.
- In evaporation of water, H and S are
- 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...
- In which of the following reactions is the enthalpy the least (i.e., smallest in magnitude)? **[MP PET 2010]**
- The enthalpy change for the transition of liquid water to steam is 40.8 kJ per mol at 100°C. The entropy change for the process...
- Which law of thermodynamics helps in calculating entropy at different temperatures? **[Jamia Millia Islamia 2004]**
- Entropy of the universe is **[K CET 2007]**
- Consider the reaction, N_2+3H_2 2NH_3 carried out at constant temperature and pressure. If H and U are the enthalpy and internal...
- The H-H bond energy is 430 kJ mol^ -1 and Cl-Cl bond energy is 240 kJ mol^ -1 . H for HCl is -90 kJ. The H-Cl bond energy is...
- H and S for a reaction are +30.558 kJ mol^ -1 and 0.066 kJ mol^ -1 at 1 atm pressure. The temperature at which free energy change...
- In which of the following reactions, the heat liberated is known as "heat of combustion"? **[J & K CET 2006]**
- Maximum entropy will be in which of the following? **[Manipal 2005]**
- In an irreversible process taking place at constant T and p and in which only pressure-volume work is being done, the change in...
- The heat of combustion of carbon to CO_2 is -393.5 kJ/mol. The heat released upon formation of 35.2 g of CO_2 from carbon and...
- Given, H^+(aq)+OH^-(aq) H_2O(l); H = -55.9 kJ, and HCN(aq)+OH^-(aq) H_2O(l)+CN^-(aq); H = -12.1 kJ. The energy of dissociation of...
- When 0.2 g of 1-butanol was burnt in a suitable apparatus, the heat evolved was sufficient to raise the temperature of 200 g...
- In an isochoric process, H for a system is equal to **[UP SEE 2006]**
- In a constant volume calorimeter, 3.5 g of a gas with molecular weight 28 was burnt in excess oxygen at 298.0 K. The temperature...
- Heat liberated when 100 mL of 1 N NaOH is neutralised by 300 mL of 1 N HCl **[RPET 2005]**
- If E is the heat of reaction for a gas-phase reaction ( n_g=-1) at constant volume, the H (heat of reaction at constant...
- Heat required to raise the temperature of 1 mole of a substance by 1° is called **[Jamia Millia Islamia 2005]**
Other chapters
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