Which of the following species is/are not liberating oxygen gas on reaction with water at $25^\circ C$?

N a_{2} O_{2}

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C l_{2}

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P_{4}

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K O_{2}

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Solution

The correct options are
A $P_{4}$
D $C l_{2}$
(a) $N a_{2} O_{2} + H_{2} O 25^{\circ} C - -- \to N a O H + O_{2} ↑$
(b) $C l_{2} + H_{2} O 25^{\circ} C - -- \to H C l + H O C l$
(c) $P_{4} + H_{2} O 25^{\circ} C - -- \to N o r e a c t i o n$
(d) $K O_{2} + H_{2} O 25^{\circ} C - -- \to K O H + O_{2} ↑$

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