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Does hydrochloric acid (HCl) react with copper (Cu)?

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Copper will not react with hydrochloric acid. For this type of reaction to occur, the reduction potential of the reactant receiving the electrons must be lower than the reduction potential of the reactant giving up electrons. read more

Cu does not react with dil Sulphuric acid (H2SO4) or dil hydrochloric acid (HCl). But it does react with strong oxidising agents like nitric acid HNO3 to form oxides of nitrogen. It will take about one week for Cu to react with HCl to form copper chloride CuCl2. So we can not observe this in our labs within one day. read more

Although you should take a look at what Klaus said, copper does in fact react with hydrochloric acid, it just takes a week until all the copper is converted into copper chloride (green) and another week or so until it forms crystals and you can dissolve them in water to form copper chloride again (but depending on the amount of chloride it has, it'll be blue or green). read more

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