Consider the following reaction- P 4- xOH - yH 2 O - PH 3- zHP O 2-Find the sum of x - y and z- when the above reaction is balanced-

The reaction is a disproportionation reaction: Oxidation reaction: P_4 → H_2PO_2^ nbsp; n factor = |1 0| × 4 = 4 Reduction reaction: P_4 → PH_3 n factor = | ...

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Byju's Answer

Standard XII

Chemistry

Balancing Redox Equations

Consider the ...

Question

Consider the following reaction.
$P_{4} + x O H^{-} + y H_{2} O \to P H_{3} + z H P O_{2}^{-}$
Find the sum of $x$ , $y$ and $z$ , when the above reaction is balanced.

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Solution

The reaction is a disproportionation reaction:
Oxidation reaction:
$P_{4} \to 4 H_{2} P O_{2}^{-} + 4 e^{-}$ ( P oxidation changed from 0 to +1)

Reduction reaction:
$P_{4} + 12 e^{-} \to 4 P H_{3}$ ( P reduction changed from 0 to -3)
$P_{4} \to P H_{3} + 3 H_{2} P O_{2}^{-}$

balance the by adding $O H^{-}$ on the left-hand side

$P_{4} + 3 O H^{-} \to P H_{3} + 3 H_{2} P O_{2}^{-}$

Adding water to balance the hydrogen,
$P_{4} + 3 O H^{-} + 3 H_{2} O \to P H_{3} + 3 H_{2} P O_{2}^{-}$

$x = 3, y = 3, z = 3$
$x + y + z = 9$

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Consider the following reaction. P4+xOH−+yH2O→PH3+zHPO−2 Find the sum of x, y and z, when the above reaction is balanced.

Consider the following reaction.
$P_{4} + x O H^{-} + y H_{2} O \to P H_{3} + z H P O_{2}^{-}$
Find the sum of $x$ , $y$ and $z$ , when the above reaction is balanced.