mistry.com/myct/itemiewassignementProblemiD-8771 3607Bfsetonest The formation of

Question

mistry.com/myct/itemiewassignementProblemiD-8771 3607Bfsetonest The formation of CaC3 from Co(s) and Cle () involves the tollowing steps osutely charged ions is callerd n the formation of an of which absorb energy and ps are summariced for a en, X2, as Which of these steps absorb energy and which selease energy? Drag the items to the appropriate bin. of the energy changes for each associated with the strength of compound and can be he charges of the ions, and d is Absorbs energy Releases energy 9

Explanation / Answer

Part A

1. Enthalpy of sublimation hence requires energy to sublime solid to gas. Hence endothermic, heat is absorbed

2. Enthalpy of atomization energy is required to break a molecule into its atoms hence endothermic, heat is absorbed

3. Enthalpy of ionization energy is required to remove an electron from a gaseous atom hence endothermic, energy is absorbed

4. Enthalpy of electron gain energy is liberated whenever an electron is added to the gaseous neutral atom hence exothermic

5. Enthalpy of formation whenever two atoms combine to form a compound energy is liberated hence exothermic

Part C

Lattice energy of a compound depends upon charge and size of the ion.

Lattice energy is directly proportional to charge of ions

Lattice energy is inversely proportional to size of ions.

Hence small ions and large charges on ions have greater lattice energy when combined to form a compound

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