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Praxis II: Chemistry Exam Prep

Category - Chemistry

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Which of the following substances will turn blue litmus paper red?

HCl
H₂O
NaCl
NaOH
NH₃

Explanation

Answer: HCl

Acids turn blue litmus paper red. Thus, HCl will change the color of blue litmus paper.

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Praxis II: Chemistry Exam Prep

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