Which of the following are alkalis? NaOH,Ca(OH)2, KOH,Mg(OH)2,NH4OH.

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Solution

Dear Student

The alkali are the bases which are formed with alkali metals or the alkaline earth metals.
So in the given options:
$N a O H, C a (O H)_{2}, K O H, M g (O H)_{2}$ are the bases formed by the alkali metals and alkaline earth metals.
So, these are considered as alkali.
$N H_{4} O H$ is the base which is formed by nonmetal and hence it is not an alkali.

Regards.

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Similar questions

N H_{4} O H, C a (O H)_{2}, N a O H, K O H, M g (O H)_{2}

H_{2} O ?

(1) B e S O_{4} > M g S O_{4} > C a S O_{4} > B a S O_{4}

(2) B e (O H)_{2} > M g (O H)_{2} > C a (O H)_{2} > B a (O H)_{2}

(3) L i O H < N a O H < K O H < R b O H

(4) L i_{2} C O_{3} < N a_{2} C O_{3} < K_{2} C O_{3} < R b_{2} C O_{3}

H_{2} O

B e S O_{4} > M g S O_{4} > C a S O_{4} > B a S O_{4}

B e (O H)_{2} > M g (O H)_{2} > C a (O H)_{2} > B a (O H)_{2}

L i O H < N a O H < K O H < R b O H

L i_{2} C O_{3} < N a_{2} C O_{3} < K_{2} C O_{3} < R b_{2} C O_{3}

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