Litmus paper is made from water-soluble dyes which are extracted from lichens. This paper is used as an acid-base indicator. Whi
ch of these common household substances would turn blue litmus paper red? A) ammonia Eliminate B) vinegar C) baking soda D) distilled water
2 answers:
Your answer is vinegar C)
Blue litmus paper turns red in the presence of an acidic solution/compound. An acid is any substance with a pH level less than 7.
Ammonia is a moderately basic solution. It has a pH greater than 7. Therefore, it will not turn blue litmus paper red.
Baking soda is also a basic substance with a pH greater than 7. It also will not turn blue litmus paper red.
Distilled water is a neutral solution. It has a pH of 7, and it will not react with the litmus paper to change its color.
That leaves us with vinegar. Vinegar is an acid with a pH of less than 7. It will turn blue litmus paper red.
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Hence
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