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What is the basicity of H(3)PO(4) ?...

What is the basicity of `H_(3)PO_(4)` ?

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`H_(3)PO_(4)`

Since there are three OH groups present in `H_(3)PO_(4)`, its basicity is three i.e., it is a tribasic acid.
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NCERT-THE P-BLOCK ELEMENTS-EXERCISE
  1. What happens when PCl(5) is heated?

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  2. Write a balanced equation for the reaction of PCl5 in heavy water.

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  3. What is the basicity of H(3)PO(4) ?

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  4. What happens when H(3)PO(3) is heated.

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  5. List the important sources of sulphur.

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  6. Write the order of thermal stability of the hydrides of group 16 eleme...

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  7. Why is H(2)O a liquid and H(2)S a gas?

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  8. Which of the following does not react with oxygen directly? Zn,Ti,Pt,F...

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  9. Complete the following reactions: (i) C(2) H(4) + O(2) to (ii)...

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  10. Why does O3 act as a powerful oxidising agent?

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  11. How is O(3) estimated quantitatively ?

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  12. What happens when sulphur dioxide is passed through an aqueous solutio...

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  13. Comment on the nature of two S–O bonds formed in SO(2) molecule. Are t...

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  14. How is the presence of SO2 detected?

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  15. Mention three areas in which H2SO4 plays an important role.

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  16. Write the conditions to maximise the yield of H2SO4 by contact process...

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  17. Why is K(a(2)) ltlt K(a(1)) for H(2) SO(4) in water ?

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  18. Considering the parameters such as bond dissociation enthalpy, electro...

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  19. Give two examples to show the anomalous behavious of fluorine.

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  20. Sea is the greatest source of some halogens. Comment.

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