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  4. The oxidation state of phosphorus in cyclotrimetaphosphoric acid is

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Q. The oxidation state of phosphorus in cyclotrimetaphosphoric acid is

Redox Reactions

Solution:

Formula of cyclotrimetaphosphoric acid is $(HPO_3)_3$
Oxidation state of ā€˜Pā€™ is $3 ( +1 + x + 3 (-2)) = 0$
$x + - 6 + 1 = 0 ā‡’ x = + 5$