The following reactions can be used to prepare samples of metals. determine the enthalpy change under standard state conditions for each. (a) 2ag2 o(s) ⟶ 4ag(s) + o2 (g) (b) sno(s) + co(g) ⟶ sn(s) + co2 (g) (c) cr2 o3 (s) + 3h2 (g) ⟶ 2cr(s) + 3h2 o(l) (d) 2al(s) + fe2 o3 (s) ⟶ al2 o3 (s) + 2fe(s)
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