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