In a manufacturing unit of hydrochloric acid situated near a lake, an accident occurs resulting in spillage and leakage of the storage tanks containing hydrochloric acid. The spillage spreads all over an iron structure and also into the lake. The specialists are called for an inspection, who observe fizzing on the surface of the iron structure.

iii) The specialists took a sample of water from the lake. Which of the following can be used to neutralise its acidity?

Formic acid

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Acetic acid

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Limewater

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Sodium chloride

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Solution

The correct option is C Limewater
Due to spillage of HCl in the lake, the water has became acidic in nature. To neutralise it, the specialists need to add a base.
Among all the given options, only limewater $C a (O H)_{2}$ is a base.
Formic acid, acetic acid are acids and sodium chloride is a salt.
Hence, correct answer is option c.

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Q. In a manufacturing unit of hydrochloric acid situated near a lake, an accident occurs resulting in spillage and leakage of the storage tanks containing hydrochloric acid. The spillage spreads all over an iron structure and also into the lake. The specialists are called for an inspection, who observe fizzing on the surface of the iron structure.

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