Fe係oxidize 到2+定3+?
如不可的話,
用乜野先到3+?
2007-02-14 15:26:52 · 3 個解答 · 發問者 2003 2 in 科學 ➔ 化學
Fe is oxidized to Fe2+ by conc. H2SO4 since conc. H2SO4 still is not strong enough.
Acidified MnO4- and Cr2O7 are very strong oxidizing agents(stronger than conc. H2SO4). They can oxidize Fe immediately to Fe3+.
2007-02-14 18:27:08 · answer #1 · answered by de Lufz 2 · 0⤊ 0⤋
Fe is oxidized to +3 as conc H2SO4 is a very strong OA.
If Fe is oxidized to Fe2+, as you know, Fe2+ is a strong RA, it will reduce H2SO4 and is self-oxidized to Fe3+.
Therefore the answer is +3
2007-02-15 12:04:52 · answer #2 · answered by ? 3 · 0⤊ 0⤋
fe will go to fe3+, as conc. sulphuric acid is a strong oxidizing agent.
ADDItion:chlorine is a also strong oxidizing agent,when fe reacts with Cl2,the compound is fecl3
2007-02-14 16:08:11 · answer #3 · answered by ? 2 · 0⤊ 0⤋