![What reaction caused this color? I used this jar for water electrolysis with baking soda as an electrolyte. The electrodes were made of copper and the water was Icelandic tap water. Is What reaction caused this color? I used this jar for water electrolysis with baking soda as an electrolyte. The electrodes were made of copper and the water was Icelandic tap water. Is](https://preview.redd.it/qdu48w9ishz71.jpg?width=495&format=pjpg&auto=webp&s=a04a75cd5c71a3006fcc78f34a04ebcaf2fe0fa1)
What reaction caused this color? I used this jar for water electrolysis with baking soda as an electrolyte. The electrodes were made of copper and the water was Icelandic tap water. Is
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