Question

What will be the color of Methyl orange in Sodium Carbonate solution?

Answer 1

Part 1: Understanding Methyl Orange:

1. Methyl orange or yellow dye is an indicator used that is basic in nature.
2. The color of the indicator turns red in an acidic medium, yellow in a basic medium, and orange color in a neutral medium.

Part 2: Color in Sodium carbonate solution:

1. The strong base $\mathrm{NaOH}$ and the weak acid ${\mathrm{H}}_2{\mathrm{CO}}_3$combine to form Sodium carbonate$\left({\mathrm{Na}}_2{\mathrm{CO}}_3\right)$. As a result, the salt generated during this neutralization reaction has a basic character.
2. Sodium carbonate is a basic salt of a strong base and weak acid.
3. Methyl orange is a reddish-orange indicator that turns red in an acidic medium and Yellow in the basic medium.
4. As a result, the methyl orange solution changed to yellow color.

Final Answer: Hence, when methyl orange is added to sodium carbonate it changed to yellow color.