it is that A metal will only react with dilute acids if it is above hydrogen in the reactivity series.
and copper is below hydrogen in reactivity series so...why we cannot store concentrated HCl in copper vessel
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They react with dilute acids at room temperature itself. The metals of moderate reactivity are Magnesium, Aluminium, Zinc, Iron and Copper. ... Because they are less reactive than hydrogen and they cannot displace hydrogen from dilute acid. Therefore copper does not react with hydrochloric acid....
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