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Atomic: M.A.C. | Reference
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Reactions of Tin
Reactions with water
It is stable to water under ambient conditions but on heating with steam, tin reacts with water to from tin dioxide and hydrogen.
  Sn(s) + 2H2O(g)SnO2(s) + 2H2(g)
Reactions with air
It is stable in air under ambient conditions but on heating in air or oxygen, tin reacts with oxygen to from tin dioxide.
  Sn(s) + O2(g)SnO2(g)
Reduction Potentials
Balanced half-reaction E0 / V
Sn4+ + 2e-Sn2+ +0.154
Sn4+ + 2e-Sn2+ +0.14
Sn4+ + 4e-Sn(s) +0.01
Sn2+ + 2e-Sn(s) -0.136
Sn2+ + 2e-Sn(s) -0.16
SnO32- + 3H+ + 2e-HSnO2- + H2O +0.374
SnO32- + 6H+ + 2e-Sn2+ + 3H2O +0.844
HSnO2- + 3H+ + 2e-Sn(s) + 2H2O +0.333
Sn(s) + 4H+ + 4e-SnH4(g) -1.074