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19 October, 09:35

How does the ph of hydrochloric acid change when copper oxide is graduallt added to hydrochloric acid until excess?

does it increase? decrease?

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  1. 19 October, 09:56
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    Copper does not react with HCl acid, but copper oxide does react. A metal-acid reaction is always a redox reaction. Since copper has a higher reduction potential than hydrogen, it does not react with non-oxidising acids like HCl or dil. H2SO4.
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