Thermodynamics questions
1906 published questions with worked solutions.
- The H^ _f for CO_2(g), CO(g) and H_2O(g) are -393.5, -110.5 and -241.8 kJ/mol respectively. The standard enthalpy change (in kJ)...
- For spontaneity of a cell, which is correct? **[OJEE 2004]**
- The latent heat of fusion of ice at 0°C is 80 cal/g. The entropy change ( S) accompanying the melting of 1 g of ice at 0°C would...
- For which reaction will the change of entropy be positive? **[WB-JEE 2008]**
- What will be the temperature at which G=-5.2 kJ mol^ -1 , H=145.6 kJ mol^ -1 and S=216 JK^ -1 mol^ -1 for a chemical reaction?
- For the process H_2O(l)(1 bar, 273 K) H_2O(g)(1 bar, 373 K) the correct set of thermodynamic parameters is **[IIT JEE 2007]**
- One mole of which of the following has the highest entropy? **[K CET 2008]**
- What will be the value of G for ice at 8°C temperature? **[Guj CET 2009]**
- 2 moles of an ideal gas expanded isothermally and reversibly from 1 L to 10 L at 300 K. What is the enthalpy change? **[IIT JEE...
- The heat of neutralisation of any strong acid and a strong base is nearly equal to
- The standard enthalpy of formation ( H_f^ ) at 298 K for methane, CH_4(g), is -78.4 kJ mol^ -1 (as printed in the source; the...
- The occurrence of a reaction is impossible if **[J & K CET 2003]**
- For a reaction H=(+3 kJ), S=(+10 J/K), beyond which temperature will this reaction be spontaneous?
- A spontaneous process is one in which the system suffers **[VITEEE 2008]**
- In the conversion of limestone to lime, CaCO_3(s) CaO(s)+CO_2(g), the values of H^ and S^ are +179.1 kJ ,mol^ -1 and 160.2 J/K...
- Which of the following reactions define G^ _f? **[Guj CET 2010]**
- When ice melts into water, the entropy **[Manipal 2010]**
- 1 mole of H_2SO_4 is mixed with 2 moles of NaOH. The heat evolved will be **[J & K CET 2004]**
- Highest entropy is in **[BCECE 2006]**
- When 50 cm^3 of 0.2 N H_2SO_4 is mixed with 50 cm^3 of 1 N KOH, the heat liberated is **[AMU 2006, K CET 2006]**
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