Q1. Which mixing of 1 M acid and 1 M base will produce maximum rise in temperature?
Q2. A liquid is stirred mechanically in a thermally insulated vessel. Which is correct?
Q3. 28.0 L of CO₂ is produced on complete combustion of 16.8 L gaseous mixture of ethene and methane at 25°C and 1 atm. Heat evolved (kJ) is:
Q4. When 600 mL of 0.2 M HNO₃ is mixed with 400 mL of 0.1 M NaOH, rise in temperature (×10⁻² °C) is:
Q5. For ΔH > 0 and ΔS > 0, reaction is spontaneous when:
Q6. ΔH°vap for water = +40.79 kJ mol⁻¹ at 100°C. Change in internal energy (kJ mol⁻¹):
Q7. Three moles of ideal gas expand isothermally from 30 dm³ to 45 dm³ against constant pressure of 80 kPa. Heat transferred (J):
Q8. ΔHvap of CCl₄ = 30.5 kJ mol⁻¹. Heat required to vaporise 284 g CCl₄ (kJ):
Q9. Number of endothermic processes:
I₂(g)→2I(g), HCl(g)→H(g)+Cl(g), H₂O(l)→H₂O(g), C(s)+O₂→CO₂, NH₄Cl dissolving
Q10. ΔH°f for CH₂=CH₂ (kJ mol⁻¹) is: