Question

2. Which of the following is not an alkali ? Sodium hydroxide, Calcium hydroxide, Aluminium hydroxide,​

Answer 1

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Answer 2

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2. Which of the following is not an alkali ? Sodium hydroxide, Calcium hydroxide, Aluminium hydroxide,

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Hi! Sodium hydroxide is a salt, salts are compounds formed by netralisation of an acid by a base, thus they are neither acidic, not basic, which makes them a base. Aluminium hydroxide is a weak base, and since base is another word for alkali, aluminium hydroxide is a weak alkali. Calcium hydroxide is also an alkali.