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The P-Block Elements
Question
What happens when H3PO3 is heated?
Solution
H3PO3, on heating, undergoes disproportionation reaction to form PH3 and H3PO4. The oxidation numbers of P in H3PO3, PH3, and H3PO4 are +3, −3, and +5 respectively. As the oxidation number of the same element is decreasing and increasing during a particular reaction, the reaction is a disproportionation reaction.
H3PO3 on heating disproportionates to give orthophosphoric acid and phosphine.
4H3 PO3→3H3PO4 + PH3
H3PO3 on heating disproportionates to give orthophosphoric acid and phosphine.
4H3 PO3→3H3PO4 + PH3
Some More Questions From The p-Block Elements Chapter
Write a balanced equation for the hydrolytic reactions PCl5 in heavy water.
What is the basicity of H3PO4?
What happens when H3PO3 is heated?
List the important source of sulphur.
Write the order of thermal stability of the hydrides of Group 16 elements.
Why is H2O a liquid and H2S a gas?
Which of the following does not react with oxygen directly?
Zn, Ti, Pt, Fe
Complete the following reactions
(i) C2H4 + O2 →
(ii) 4Al + 3O2 →
(i) C2H4 + O2 →
(ii) 4Al + 3O2 →
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Mock Test Series
Mock Test Series