Question

Why do you think is it important to test an unknown substance with both types of litmus paper

Answer 1

Answer:

Explanation:

we need to use both the litmus paper because...

Red paper is used to detect alkaline pH and will turn a shade of blue in the presence of a basic solution. Blue litmus paper is used to test for acids and will turn a shade of red when it comes in contact with an acidic solution.

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