Acids turn both red and blue litmus paper red. Bases turn both red and blue litmus paper blue. Neutral substances (water) turns red litmus red and blue litmus blue.
litmus paper finds if something is alkaline or acid blue= alkaline red=acid there are other colours along the PH scale
Bases turn red litmus paper blue.
Red is used to measure if the substance is an alkali. Blue is used to measure if the substance is an acid
A neutral solution
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