Question

The formula of soda ash is

• A. $Na_{2}CO_{3}.10H_{2}O$
• B. $Na_{2}CO_{3}.2H_{2}O$
• C. $Na_{2}CO_{3}.H_{2}O$
• D. $Na_{2}CO_{3}$

Answer 1

Answer: (D)

$Na_{2}CO_{3}$

Answer 2

: Anhydrous $Na_{2}CO_{3}$ is called ‘soda ash’ while sodium carbonate decahydrate, $Na_{2}CO_{3}.10H_{2}O$ is called ‘washing soda’.