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"In the experimental setup below, which substance would be used to prove that the gas produced by the yeast in the vacuum bottle could change the pH of the liquid in the flask? (1)an indicator (2)a chemical
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"In the experimental setup below, which substance would be used to prove that the gas produced by the yeast in the vacuum bottle could change the pH of the liquid in the flask?

(1)an indicator
(2)a chemical messenger
(3)an enzyme
(4)a salt solution"

"In the experimental setup below, which substance would be used to prove that-example-1
User PeterJ
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2 Answers

1 vote
its (1) an indicator    
User Giulp
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4 votes
I'm not totally sure. But in my view, (4)a salt solution would be used to prove that the gas produced by the yeast in the vacuum bottle could change the pH of the liquid in the flask
User AbdAllah
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