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What happens when phosphorus acids (H(3)...

What happens when phosphorus acids `(H_(3)PO_(3))` is heated ?

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In phosphorus acid `(H_(3)PO_(3))`, central atom P is in `+3` oxidation state. Upon heating, it gives a mixture `PH_(3)` (P in `-3` oxidation state) and `H_(3)PO_(4)` (P in `+5` oxidation state). This means that phosphorus acid undergoes disproportionation reaction.
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DINESH PUBLICATION-THE P-BLOCK ELEMENTS -N.C.E.R.T In-Text Questions
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  2. What is the basicity of H(3)PO(4) ?

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  3. What happens when phosphorus acids (H(3)PO(3)) is heated ?

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

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  9. Why does O(3) act as a powerful oxidising agent ?

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  10. How is O(3) estimated quantitatively ?

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  11. What happens when sulphur dioxide gas is passed through an aqueous sol...

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

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  13. How is the presence of SO2 detected?

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

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  16. If osmotic pressure of 1M aqueous solution of H(2)SO(4) at 500K is 90....

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  20. Give reason for the bleaching action of Cl(2).

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