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- 1. Multiple ChoiceWhich equation represents the standard enthalpy of atomisation?1/8 S 8 (s) -> S (g)Na (s) -> Na (l)Cl2 (g) -> 2Cl (g)CH4 (g) -> C (g) + 2H2 (g)
- 2. Multiple ChoiceWhich simple covalent molecule has the highest standard enthalpy of atomisation?N2NOO2O3
- 3. Multiple ChoiceIn a Born-Haber cycle for a metal oxide, which one always show NEGATIVE values?First electron affinity, Lattice energyEnthalpy of atomisation, First ionisation energy,Second ionisation energy, Second electron affinity,
- 4. Multiple ChoiceWhich compound has the lowest lattice energy?CsClCaCl2K2OMgCl2
- 5. Multiple ChoiceNaCl, KCl, MgCl2 and CaCl2 are examples of soluble salts. Which is the correct sequence of salts in order of their increasing lattice energies?KCl, NaCl, CaCl2, MgCl2NaCl, KCl, MgCl2, CaCl2NaCl, MgCl2, KCl, CaCl2MgCl2, CaCl2, NaCl, KCl
- 6. Multiple ChoiceX and Y are alkali metals. The melting points of XCl and YCI are 770oC and 801 oC respectively. The radius of the Y ion is ______ than that of the X.smallerbigger
- 7. Multiple ChoiceThe melting points of XCl and YCI are 770oC and 801 oC respectively. Which has higher lattice energy?YClXCI
- 8. Multiple ChoiceThe melting points of XCl and YCI are 770oC and 801 oC respectively. Which is the charge density ion is smaller?X ionsY ions
- 9. Multiple ChoiceLiCl and NaCl have similar standard enthalpies of formation but different lattice energy. Which compound has a higher lattice energy?LiClNaCl
- 10. Multiple ChoiceFactors that contribute to the difference in the lattice energy.charge of both cation and anionInter ionic radiusIonisation energy
- 11. Multiple ChoiceHeat is absorbed when NaCl dissolves in water. Which enthalpies are involved in the solubility of this compound?Hydration energy & Lattice energyElectron affinity & Ionisation energy
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