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Chemistry, 25.04.2021 19:30 12bluestone

An unknown substance turns blue litmus paper to red. Which additional test could be used to confirm the substanceā€™s identity? It should turn phenolphthalein from colorless to pink because it is a base.
It should turn phenolphthalein from pink to colorless because it is a base.
It should turn methyl orange to orange because it is an acid.
It should turn methyl orange to red because it is an acid.

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An unknown substance turns blue litmus paper to red. Which additional test could be used to confirm...
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