A salt is formed when sulfurous acid combines with 2 moles of sodium hydroxide. The name of the salt is _________.

sodium bisulfite

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sodium sulfide

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sodium sulfite

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sodium sulfate

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Solution

The correct option is C sodium sulfite
The chemical reaction is
$H_{2} S O_{3} + N a O H \to N a H S O_{3} + H_{2} O$ (For 1 mole of NaOH)
$N a H S O_{3} + N a O H \to N a_{2} S O_{3} + H_{2} O$ (For 2 moles of NaOH)
$N a_{2} S O_{3}$ (Sodium sulfite) is the final salt obtained.

Sodium bisulfite $(N a H S O_{3})$
Sodium sulfide $(N a_{2} S)$
Sodium sulfate $(N a_{2} S O_{4})$

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Similar questions

Sodium hydroxide reacts with dilute nitric acid to form a soluble salt. Name this salt.

Sulphuric acid forms two types of salt when reacted with sodium hydroxide in different conditions.

(a)

(b)

(c)

(d)

H_{2} S O_{4}

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