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Why PCl3 fumes in moisture?...

Why `PCl_3` fumes in moisture?

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`PCl_(3)` hydrolyses in the presence of moisture giving fumes of HCl.
`PCl_(3) + 3H_(2)O to H_(3)PO_(3)+ 3HCl`
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(a) Why does PCl_3 fume in moisture ? (b) Are all the five bonds in PCl_5 molecule equivalent ? Justify your answer. ( c) How do you account for the reducing behaviour of H_3 PO_2 on the basic of its structure ? (d) Give the disproportional reaction of H_3PO_3 .

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NCERT-THE P-BLOCK ELEMENTS-EXERCISE
  1. Why PCl3 fumes in moisture?

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  2. Why are pentahalides of P,As,Sb and Bi are more covalent than trihalid...

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  3. Why is BiH3 the strongest reducing agent amongst all the hydrides of g...

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  4. Why is N(2) less reactive at room temperature ?

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  5. Mention the conditions required to maximise the yield of ammonia.

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  6. How does ammonia react with a solution of Cu^(2+)?

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  7. What is the covalence of nitrogen in N2O5?

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  8. Bond angle in PH(4)^(+) is higher than that in PH(3).Why ?

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  9. What happens when white phosphorus is heated with concentrated NaOH so...

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  10. What happens when PCl(5) is heated?

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

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

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

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  14. List the important sources of sulphur.

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

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

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

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

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

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  20. How is O(3) estimated quantitatively ?

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

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