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The formula of soda ash is

(i) Na_{2} CO_{3}.10H_{2}O

(ii) Na_{2}CO_{3}.H_{2}O

(iii) Na_{2}CO_{3} .2H_{2}O

(iv) Na_{2}CO_{3}

Answers (1)

The answer is the option (iv) Soda ash is formed when Washing soda (Na_{2}CO_{3}.10H_{2}O ) loses water of crystallization above 373K.

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