A sample of soil is mixed with water and allowed to settle. The clear supernatant solution turns the pH paper yellowish-orange. Which of the following would change the colour of this pH paper to greenish- blue?
(a) Lemon juice
(b) Vinegar
(c) Common salt
(d) An antacid
Answers
Answered by
4
Answer:
antacid is your answer means number 4
Answered by
3
Answer:
Antacid is a base which is baking soda or sodium bicarbonate or sodium hydrogen carbonate which can change the pH paperfrom yellow orange to green while others are acidic in nature.
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