Which of the following reactants will give caustic potash?

Lime

+ K_{2} C O_{3}

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Lime

+ K C l

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Lime

+

potassium

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All of the above

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Solution

The correct option is A Lime $+ K_{2} C O_{3}$
Lime $+ K_{2} C O_{3}$ will give caustic potash
Lime is $C a (O H)_{2}$
$C a (O H)_{2} + K_{2} C O_{3} \to C a C O_{3} ↓ + 2 K O H$

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