Litmus paper is made from water-soluble dyes which are extracted from lichens. this paper is used as an acid-base indicator. which of these common household substances would turn blue litmus paper red? a) ammonia b) vinegar c) baking soda d) distilled water

B) vinegar

Explanation: Acids are those substances which when dissolved in water give ions. They turn blue litmus red.

Bases are those substances which when dissolved in water give ions. They turn red litmus blue.

Ammonia is a base which when dissolved in water forms ammonium hydroxide and gives ions and turns red litmus blue.

Vinegar is acetic acid and thus gives ions and turn blue litmus red.

Baking soda is a basic salt which turns red litmus blue.

Distilled water is neutral which shows no color change with red or blue litmus.

answer: a. same unit

explanation: