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Water is amphoteric substance. Why ?...

Water is amphoteric substance. Why ?

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Water is amphoteric substance because it can act both as acid and base as shown below.
`underset("acid")(H_(2)O)+underset("base")(NH_(3))hArrNH_(4)^(+)+OH^(Theta)`
`underset("acid")(HC1)+underset("base")(H_(2)O)hArrH_(3)O^(+)+C1^(Theta)`
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SUBHASH PUBLICATION-HYDROGEN-Two marks questions and answers
  1. Define covalent hydrides or molecular hydrides.

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  2. Define metallic hydride or interstitial hydrides.

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  3. Water is amphoteric substance. Why ?

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  4. What happens when water reacts with sodium metal ?

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  5. How to prepare hydrogen peroxide from BaO(2)?

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  6. Dilute solution of hydrogen peroxide cannot be heated strongly for its...

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  7. Can sodium bicarbonate make water hard ?

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  8. Which of the hydrogen or deuterium undergoes reactions more rapidly an...

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  9. Can we remove completely temporary hardness due to Mg(HCO(3))(2) by bo...

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  10. H(2)O(2) acts as on oxidizing agent as well as reducing agent Why ?

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  11. Why do lakes freeze from top towards bottom ?

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  12. A mixture of H(2)O(2) and hydrzine with copper (II) is used as a rocke...

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  13. Water cannot be used to extinguish petrol fires. Why ?

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  14. What is the volume strenth of H(2)O(2)?

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  15. Hard water is softened before using in boilers. Expain.

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  16. What are the uses of Heavy Water ?

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  17. Show the oxidising property of H(2)O(2) with PbS.

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  18. Discuss the position of hydrogen in the periodic table is not justifie...

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  19. Explain property of H(2)O(2)"with"MnO(4)^(-) in acidic medium.

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  20. How does H(2)O(2) reduces iodine in reducing property ?

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