why does not Platinum liberate hydrogen on reacting with dilute carbonic acid?
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platinum is a noble metal which place much below hydrogen in the reactivity series so it cannot loose electron while reacting with the acid or it cannot displaced hydrogen from it's solution so it does not with hydrogen gas
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Platinum is placed below hydrogen in the reactivity series as we know. Therefore, it cannot lose electrons to hydrogen ions of the acid called dilute carbonic acid. Hydrogen gas is not evolved when Platinum reacts with dilute carbonic acid.
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