What is the chemical formula for washing soda?

Chemical Process MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Chemical Processchemical-engineering › chemical-process
Published
14 Feb 2019
Last updated
28 May 2026

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Explanation

Washing soda is chemically known as sodium carbonate, which has the formula Na2CO3. The other options represent its hydrated forms or related compounds: Na2CO3·H2O is sodium carbonate monohydrate, Na2CO3·10H2O is sodium carbonate decahydrate (also called soda crystals), and NaHCO3 is sodium bicarbonate.

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