Multiple choice

Washing soda has formula

  1. Na₂CO₃.7H₂O

  2. Na₂CO₃.10H₂O

  3. Na₂CO₃.3H₂O

  4. Na₂CO₃

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Washing soda is Na₂CO₃.10H₂O.