Question

what happens when copper is brought in contact with hydrochloric acid​

Answer 1

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HCl acid does not react with copper. Only those metals whose standard reduction potentials are lower than that of hydrogen react with non-oxidising acids like HCl and dil.H2SO4, and displace hydrogen from them. Copper has higher reduction potential (more positive) than hydrogen, and it does not react with HCl acid.

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Answer 2

There will be no reaction, when ‘copper’ is brought in contact with hydrochloric acid.

Explanation:  

• Both the dilute and concentrated form of hydrochloric acid does not react with copper.  

• This is because hydrogen is above copper in the oxidation potential chart hence copper does not have the potential to reduce hydrogen which is above it in the table.  

• So there will be no reaction. However alkali metals like Sodium Potassium which are highly reactive can react with this acid.

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