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Preparation and Properties of Potassium Peroxide and Superoxide

KO2 finds use...

Question

$K O_{2}$ finds use in breathing equipment to safeguard the user to breathe in oxygen generated internally in the apparatus without being exposed to toxic fumes outside. The supply of oxygen is due to :

i.Slow decomposition of $K O_{2}$

ii.reaction of superoxide with moisture in the exhaled air

iii.reaction of $K O_{2}$ with $C O_{2}$ in the exhaled air

only iii is correct

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ii and iii are correct

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both i and iii are correct

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i ii and iii are all correct

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Solution

The correct option is B ii and iii are correct
Let us look at the properties of $K O_{2}$ :

$2 K O_{2} + 2 H_{2} O \to 2 K O H + H_{2} O_{2} + O_{2}$

$2 K O_{2} + C O \to K_{2} C O_{3} + O_{2}$

$4 K O_{2} + 2 C O_{2} \to 2 K_{2} C O_{3} + 3 O_{2}$

Clearly the answer is b) both ii and iii are correct

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Similar questions

K O_{2}

4 K O_{2} (s) + 2 H_{2} O (g) 4 C O_{2} (g) \to 4 K H C O_{3} (s) + 3 O_{2} (g)

K O_{2}

C O_{2}

H_{2} O

4 K O_{2} (s) + 2 H_{2} O (l) \to 3 O_{2} (g) + 4 K O H (s)

C O_{2}

K O H_{s w} + C O_{2} (g) \to K H C O_{3} (s)

K O_{2}

48

(K O_{2}))

C O_{2}

4 K O_{2} + 2 H_{2} O + 4 C O_{2} \to 4 K H C O_{3} + 3 O_{2}

0.667 g

C O_{2}

K O_{2}

1 \times 10^{- 3}

C O_{2}

O_{2}

K O_{2}

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