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

an unknown substance turns blue litmus paper to red. which additional test could be used to confirm the substances identity?\nit should turn phenolphthalein from colorless to pink because it is a base.\nit should turn phenolphthalein from pink to colorless because it is a base.\nit should turn methyl orange to orange because it is an acid.\nit should turn methyl orange to red because it is an acid.

an unknown substance turns blue litmus paper to red. which additional test could be used to confirm the substances identity?\nit should turn phenolphthalein from colorless to pink because it is a base.\nit should turn phenolphthalein from pink to colorless because it is a base.\nit should turn methyl orange to orange because it is an acid.\nit should turn methyl orange to red because it is an acid.

Answer

Brief Explanations:

Blue litmus turning red indicates an acid. Methyl orange turns red in acidic solutions. Phenolphthalein is color - less in acids and turns pink in bases.

Answer:

It should turn methyl orange to red because it is an acid.