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Direct linkMontangero, Marc – Journal of Chemical Education, 2015
When dissolving copper in nitric acid, copper(II) ions produce a blue-colored solution. It is possible to determine the concentration of copper(II) ions, focusing on the hue of the color, using a smartphone camera. A free app can be used to measure the hue of the solution, and with the help of standard copper(II) solutions, one can graph a…
Descriptors: Science Instruction, Secondary School Science, Telecommunications, Handheld Devices
