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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asked Nov 16, 2019 142k views

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Willem Hengeveld · Answer 1 · 2019-11-22T03:46:31+0000

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.

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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