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JEE Main
Exam
JEE Main
Subject
Chemistry
Chapter
Redox Reactions

JEE Main · Chemistry · Redox Reactions

In the following reaction, 4P + 3KOH + 3 H _ 2 O → 3K H _ 2 P O _ 2...

In the following reaction, 4P+3KOH+3H2O→3KH2PO2+PH34P + 3KOH + 3{H}_{2}O \to 3K{H}_{2}P{O}_{2} + P{H}_{3}

Options

  1. AP is only oxidized
  2. BP is only reduced
  3. CP is both oxidized as well as reduced
  4. DNone of the above

Correct answer

C. P is both oxidized as well as reduced

Step-by-step solution

4P0+3KOH+3H2O→3KH2P+1O2+P−3H34\overset{0}{P} + 3KOH + 3{H}_{2}O \to 3{KH}_{2}\overset{+ 1}{P}{O}_{2} + \overset{- 3}{P}{H}_{3}

It is a disproportionation reaction. Here P atom changes oxidation number zero to +1 and zero to -3. Hence, P is both oxidized as well as reduced

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