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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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To understand why \( H_3PO_3 \) acts as a reducing agent while \( H_3PO_4 \) does not, we need to analyze the oxidation states of phosphorus in both compounds and their structures. ### Step-by-Step Solution: 1. **Identify the Structures**: - **\( H_3PO_3 \)** (Phosphorous acid) has the structure: \[ \text{O} \\ ...
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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)(VERY SHORT ANSWER QUESTIONS)
  1. What is laughing gas ? How is it prepared?

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  2. On being slowly passed through water, PH3 forms bubbles but NH3 dissol...

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

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  4. Mention one use of hydrazine.

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  5. Basicity of H3PO2, H3PO3 and H3PO4 is not the same. Explain

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  6. What are chalcogens ? Why are group 16 elements called chalcogens ?

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  7. What is the outer shell electronic configuration of chalcogens?

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  8. Name the allotropes of oxygen.

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  9. Which element of group 16 has maximum tendency for catenation ?

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  10. Ionisation enthalpy of nitrogen is more than oxygen because of

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  11. What is hypo?

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  12. Sodium thiosulfate is a salt of which acid ?

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  13. Give one method of preparation of sodium thiosulfate.

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  14. Which form of sulphur shows paramagnetic behaviour ?

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  15. What are allotropes of sulfur?

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  16. What do you understand by (a) inert pair effect (b) allotropy and (c...

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  17. What is oleum ? What is the oxidation state of sulfur in it?

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  18. What property of conc. H2SO4 is made use of in each of the following c...

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  19. Give reason why? Conc. H(2)SO(4) is not a drying agent for H(2)S?

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  20. What happens when ozone reacts with KI solution?

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