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What causes the temporary and permanent ...

 What causes the temporary and permanent hardness of water?

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Temporary hardness of water is due to the presence of bicarbonates of calcium and magnesium in water i.e., `Ca(HCO_(3))_(2)`, and `Mg(HCO_(3))` in water. Permanent hardness of water is due to the presence of soluble chlorides and sulphates of calcium and magnesium ie,` CaCl_(2)`, `CaSO_(4)`. `MgCl_(2)` and `MgSO_(4)`.
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FULL MARKS-HYDROGEN -Additional Questions Solved 3-Mark Questions
  1. Write a note about ortho water and para water

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  2. Water is an amphoteric oxide. Justify this statement.

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  3. Distinguish between hard water and soft water

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  4. Explain the action of soap with hard water.

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  5. Describe about ion exchange method of softening water (or) Explain Zeo...

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  6. Explain about the exchange reactions of deuterium oxide.

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  7. Complete the following reactions. AI(4)C(3)+D(2)Oto? CaC(2)+D(2)Oto...

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  8. What are the uses of hydrogen peroxide?

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  9. Prove that H(2)O(2) act as reducing agent in alkaline medium.

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  10. Write a note about saline (or) ionic hydride.

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  11. What are metallic hydrides? Explain about it.

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  12. What are intermolecular hydrogen bonds? Explain with example.

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  13. What are intermolecular hydrogen bonds? Explain with example.

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  14. Explain about the importance of hydrogen bonding in proteins.

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  15. What are Clathrate hydrate? Explain it with suitable example.

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  16. What are crystalline hydrates? Explain it with example.

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  17. What do you understand by (i) Electron-deficient (ii) Electron-precise...

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  18. What causes the temporary and permanent hardness of water?

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  19. Write the chemical reactions to show the amphoteric nature of water.

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  20. What is the difference between the terms 'hydrolysis' and 'hydration'?...

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