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

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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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Size: 5166px × 3483px
Photo credit: © MARTYN F. CHILLMAID/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -, acid, acidic, background, bleached, blue, chemical, chemistry, chlorine, education, fumes, litmus, moist, paper, positive, red, school, science, test, tube, vapor, vapour, white