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Why is LiF almost insoluble in water, wh...

Why is LiF almost insoluble in water, whereas LiCl soluble not only in water but also in  acetone?

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The low solubility of Lif in water is due to its very high lattice enthalpy (`F^(-)`ion is very small in size). On the other hand, in lithium chloride (LiCl) the lattice enthalpy is small. This means that the magnitude of hydration enthalpy is quite large chloride dissolves in water. It is also soluble in acetone due to dipolar attrac polar in nature).
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FULL MARKS-ALKALI AND ALKALINE EARTH METALS-Additional Questions Solved
  1. Explain the following: (a) Lithium iodide is more covalent than lit...

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  2. Why alkali metals are soft and have low melting points?

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  3. Why is LiF almost insoluble in water, whereas LiCl soluble not only in...

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  4. Give reasons for the following. Sodium and potassium are stored in ker...

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  5. What is the structure of BeCl(2) ?

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  6. Why is Li(2)Co(3) decomposed at a lower temperature whereas Na(2)CO(3)...

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  7. . Alkali metals give colouration when heated in Bunsen flame. Give rea...

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  8. How Sodium metal  reacts with (i) ethanol and (ii) acetylene.

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  9. Mention the uses of lithium and its compounds.

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  10. What are the uses of sodium and its compounds?

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  11. What are the uses of potassium and its compounds?

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  12. What is soda ash ? How it obtained ?

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  13. List down the uses of washing soda.

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  14. How would you prepare pure sodium chloride from crude salt?

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  15. Mention the uses of sodium chloride.

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  16. List the uses of sodium hydroxide.

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  17. Give reason why sodium bicarbonate is used in bakeries.

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  18. Write about the uses of sodium bicarbonate.

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  19. Explain the action of soda lime with (i) SiO(2) and (ii)P(4) O...

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  20. Explain the periodic nature of ionization enthalpy in the alkali group...

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