本帖最後由 rose~ 於 29/11/2010 12:29 AM 編輯 C) Fe(s) + CuSO4(aq) > FeSO4(aq) + Cu(s) Fe and Cu are insoluble in Water, Sulphates are generally soluble in water, they completely dissociate and form ions Fe + Cu2+ + SO4 2- > Fe2+ + SO4 2- + Cu Fe(s) + Cu2+(aq) > Cu(s) + Fe2+(aq) * Sulphate ions are spectator ions. D) Cu(s) + 2AgNO3(aq) > 2Ag(s) + Cu(NO3)2(aq) Ag and Cu are insoluble in Water, Nitrates are soluble in water, they completely dissociate and form ions Cu + 2Ag+ + 2NO3 - > Cu2+ + 2NO3 - + 2Ag Cu(s) + 2Ag+(aq) > Cu2+(aq) + 2Ag(s) * Nitrates ions are spectator ions. chem的我識答(還望求證),但是收藏就幫不了zzz |