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Why does H3PO3 act as a reducing agent ...

Why does `H_3PO_3` act as a reducing agent but `H_3PO_4` does not?

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Why does O_3 act as a powerful oxidising agent?

Assertion : H_(3)PO_(2) has strong reducing property but H_(3)PO_(4) does not. Reason : P-OH bond present in H_(3)PO_(4) .

Shape of H_3PO_4 is

Which of the following acts as reducing agent and why ? H_3 PO_3 or H_3 PO_4 .

Account for the following : (i) Sulphur in vapour from exhibits paramagnetic behavious. (ii) SnCl_(4) is more covalent the SnCl_(2) . (iii) H_(3)PO_(2) is a stronger reducing agent then H_(3)PO_(3) .

Why does H_(2)O_(2) act both as an oxidising and a reducing agent?

Give reasons for the following : (A) (CH_(3))_(3)P=O exists but (CH_(3))_(3)N=O does not. (B) Oxygen has less electron gain enthalpy with negative sigh than sulphur. (C ) H_(3)PO_(2) is stronger reducing agent than H_(3)PO_(3) .

H_(3)PO_(3) is ..... acid

Strong reducing behaviour of H_(3)PO_(2) is due to

Strong reducing behaviour of H_(3)PO_(2) is due to

ICSE-P-BLOCK ELEMENTS-EXERCISE (PART-II)(DESCRIPTIVE QUESTIONS)(SHORT ANSWER QUESTIONS)
  1. Draw the strucutres of the following H3PO4

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  2. Complete the following chemical equations : P4(s) + NaOH(aq) + H2O r...

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  3. Why does H3PO3 act as a reducing agent but H3PO4 does not?

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  4. Draw the structures of white phosphorus and red phosphorus. Which one...

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  5. How is ammonia manufactured industrially?

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  6. Write main differences between the properties of white phosphorus and ...

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  7. What is the basicity of H3PO3 and why ? Complete the following equat...

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  8. Name the elements belonging to oxygen family and write down their elec...

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  9. Members of the oxygen family are called halogens.

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  10. What is catenation ? Explain why oxygen is diatomic, while sulfur is o...

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  11. Account for the following: The valency of oxygen is generally 2, wh...

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  12. Account for the following: Tendency to show -2 oxidation state dimi...

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  13. Explain the following: (a) Oxygen molecule has formula O2 while sul...

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  14. Compare the structural shapes of the following species: (i) SF4 (...

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  15. (a) Draw the molecular structures of the following compounds : (i) N...

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  16. How would you account for the following : (i) The electron gain enth...

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  17. (a) Give reasons for the following: (i) Sulphurin vapour state shows...

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  18. (a) Account for the following observations : (i) SF(4) is easily hyd...

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  19. Explain the following situations : (ii) Sulfur exhibits greater tend...

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  20. Why oxygen differs from the rest of the members of its family?

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