Question

What happen when a solution of metal oxide is tested with blue Litmus Paper and red litmus paper? (Please give the answer in very short answer for 1marks question)

Answer 1

Metal oxides are basic in nature

hence when tested with blue litmus paper it remains blue but when tested with red litmus paper it turns red

hope it helps

Answer 2

Answer:

While testing with red litmus paper, the metal oxide solution turns the paper blue.

While testing with “blue litmus paper”, the color of the paper remains unchanged.

Explanation:

This is because “metal oxides are basic in nature”. While in solution with water it produces bases.

For example:

“sodium oxide produces sodium hydroxide in water”. And base turn into “red litmus blue”. So the change is observed.

• In acidic medium, “litmus paper turns blue, and in basic medium, the litmus paper turns red”.

• Based on this principle, “litmus paper or litmus solution is used as indicator in chemistry”, to detect the pH of a medium i.e. The medium is acidic or basic.