What happens when acid rain flow into rivers?

What happens when a acidic solution of the green compound 'B' is allowed to stand for some time. Give the equation involved. What in the type of reaction called?

What happens when copper oxide reacts with dilute hydrochloric acid?

What happens when an acidic solution of the green compound 'B' is allowed to stand for sometime. Give the equation involved. What is the type of reaction called.

What happens when acidified water is electrolysed?

What happens when metals reacts with water?

What happens when Magnesium reacts with air then hydrolysed.

What happens when: Butene reacts with HI