Question

What happens to red litmus paper when it touches a household cleaner that has ammonia in it, and why?

Answer 1

Litmus paper will turn blue.

Explanation:

If we look at Ammonia, its chemical formula is `NH_3`. When it is dissolved in water, it accepts protons from water. Therefore, it is a base. Since litmus paper turns blue in a base and red in an acid, it will turn blue as it's in a base.

Hope this helps.