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1 solution
Tin is higher in the chemical activity/reactivity series than hydrogen is. Accordingly, when given an opportunity, tin will displace hydrogen from sulfuric acid. In the process, an atom of Sn will be oxidized to a Sn(II) cation. The two electrons lost by the tin atom will be gained by the protons from the acid molecule resulting in the reduction of the hydrogen ions to elemental, diatomic hydrogen gas.