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The hydroxides and carbonates of sodium ...

The hydroxides and carbonates of sodium and potassium are easily soluble in water the corresponding compounds of magnesium and calcium are springly soluble. Explain.

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Sodium and potassium have large size as compared to magnesium and calcium. Therefore, the lattice enthalpies of hydroxides and carbonates of sodium and potassium are much lower than those of hydroxides and carbonates of magnesium and calcium. As a result, the hydroxides and carbonates of sodium and potassium are easily soluble in water whereas the corresponding salts of magnesium and calcium are sparingly soluble in water.
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MODERN PUBLICATION-S-BLOCK ELEMENTS ( ALKALI AND ALKALINE EARTH METALS ) -NCERT FILE ( NCERT Textbook Exercises)
  1. Potassium carbonate can be obtained by Solvay's process.

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

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  3. Compare the solubility and thermal stability of the following compound...

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  4. Starting from sodium chloride, how will you proceed to prepare (i) sod...

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  5. What happens when (a) magensium in burnt in air, (b) quicklime is heat...

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  6. Describe two important uses of each of the following: (a) casutic so...

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  7. Draw the structure of (i) BeCl2 (vapour) and (ii) BeCl2 (solid).

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  8. The hydroxides and carbonates of sodium and potassium are easily solub...

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  9. Describe the importance of the following: (a) limestone, (b) cement an...

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  10. Why are lithium salts commonly hydrated while those of other alkali me...

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  11. Why it LiF almost insoluble in water while LiCl is soluble not only in...

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  12. Explain the significance of sodium, potassium, magnesium and calcium o...

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  13. What happens when a. Sodium metal is dropped in water? b. Sodium m...

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  14. Comment on each of the following observation: a. The mobilities of t...

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  15. State as to why (a) a solution of Na(2)CO(3) is alkaline ? (b) alk...

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  16. Write balanced quations for reaction between (a) Na2O2 and water (...

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  17. How would you explain the following observations? (i) BeO is almost ...

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  18. .Which of the alkali metal is having least melting point?

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  19. Which one of the following alkali metals gives hydrated salts ?

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  20. Which one of the alkaline earth metal carbonates is thermally the most...

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