Question

What is the colour change of lemon juice, soda water, vinegar,baking soda solutions with red cabbage extract

Answer 1

Answer:

lemon juice, vinegar, baking soda and washing powder to separate glasses, leaving middle glass untouched. The purple cabbage juice turns red when it mixes with acids and turns blue/green when it mixes with base.

Answer 2

Answer:

When baking soda (Sodium hydrogen carbonate) is mixed with lemon juice (citric acid), bubbles are formed. The bubbles are formed due to the evolution of carbon dioxide gas. This is a chemical change.

In this change, citric acid contained in lemon juice reacts with sodium hydrogen carbonate which results in the evolution of carbon dioxide gas.

Lemon juice + Baking soda → Carbon dioxide + Other substances

Citric acid Sodium

Hydrogen carbonate