Positive test for chlorine

Positive test for chlorine

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This image is part of the sequence Science and technology: Test for chlorine

Credit: MARTYN F. CHILLMAID/SCIENCE PHOTO LIBRARY

Caption: Positive test for chlorine. At left, a moist blue litmus paper is held over a test tube of chlorine. At right, the chlorine vapour turns the strip red and then bleaches it white. Blue litmus paper turns red under acidic conditions.

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Keywords: acid, acidic, bleached white, blue litmus paper, chemical, chemistry, chlorine, fumes, moist blue litmus paper, no-one, nobody, positive, red, school science, science education, test, test tube, vapor, vapour, white background

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