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(3) £¨2£©NO2- + £¨4£©2H+ + 2I- ©¤¡ú£¨2£©NO + I2 + £¨2£©H2O¡Á (4) K2Cr2O7 + 6Fe2+ + 14H+ ©¤¡ú2Cr3+ + 6Fe3+ + 7H2O + 2K+¡Á Cr2O7 + 6Fe2+ + 14H+ ©¤¡ú2Cr3+ + 6Fe3+ + 7H2O (5) FeS + 4HNO3 ©¤¡ú Fe(NO3)3 + S¡ý+ NO¡ü + 2H2O¡Ì (6) £¨3£©Fe2+ + NO3- + 4H+ ©¤¡ú£¨3£©Fe3+ + NO¡ü+ 2H2O¡Á 5. Ö¸³öÏÂÁи÷Ô­µç³Ø·ûºÅµÄ±íʾʽÊÇ·ñÕýÈ·, ²¢°Ñ´íÎóµÄÓèÒÔ¸ÄÕý¡£ (1) Ñõ»¯»¹Ô­·´Ó¦: Fe(s) + Ag+(aq) ©¤¡ú Fe2+(aq) + Ag(s) Ô­µç³Ø·ûºÅ: (-)Ag¨OAg+¡¬Fe2+©¦Fe(+)¡Á (-)Fe¨OFe2+£¨c1£©¡¬Ag+£¨c2£©©¦Ag (+)

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2Fe2+(0.010mol?L-1) + Cl2(100kPa)=2Fe3+(0.10mol?L-1) + 2Cl-(2.0mol?L-1) Ô­µç³Ø·ûºÅ:

(-)Pt¨OFe2+(mol?L-1),Fe3+(0.10mol?L-1)¡¬Cl2(100kPa)¨OCl-(2.0mol?L-1),Pt(+)¡Á (-)Pt¨OFe2+(0.01mol?L-1),Fe3+(0.10mol?L-1)¡¬Cl-(2.0mol?L-1)¨OCl2(100kPa),Pt(+) 6. Ñõ»¯»¹Ô­µç¶Ôµ±Ñõ»¯ÐÍ»ò»¹Ô­ÐÍÎïÖÊ·¢ÉúÏÂÁб仯ʱ,µç¼«µçÊÆ½«·¢ÉúÔõÑùµÄ±ä»¯? (1) Ñõ»¯ÐÍÎïÖÊÉú³É³Áµí£»¡ý (2) »¹Ô­ÐÍÎïÖÊÉú³ÉÈõËá¡£¡ü 7. ÌîдÏÂÁпհ×:

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(3) Fe3+ºÍFe (4) Fe2+ºÍCr2O72- (ËáÐÔ½éÖÊ); (5) Fe2+ºÍMnO4-(ËáÐÔ½éÖÊ)£» (6) Cl-¡¢Br-ºÍI- (7) Fe2+ºÍSn4+ (8) I2 ºÍSn2+

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(4)²»ÄÜ¡£E¦È(Cr2O72-£¯Cr 3+)> E¦È(Fe 3+/ Fe 2+), Cr2O72-+6Fe2+ +14 H+ ¡ú 2Cr 3++6Fe3++7H2O

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(6)²»ÄÜ¡£E¦È(I2£¯I -)> E¦È(Sn4+/ Sn2+), I2 + Sn2+ ¡ú 2 I-+ Sn4+ 11. »Ø´ðÏÂÁÐÎÊÌâ:

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µÚ2/5Ò³

H- ©¤¡ú Zn(OH)42- + Cl-

(6) MnO4- + SO32- + OH- ©¤¡ú MnO42- + SO42- 4. ½«ÏÂÁÐÑõ»¯»¹Ô­·´Ó¦Éè¼Æ³ÉÔ­µç³Ø,²¢Ð´³öÔ­µç³Ø·ûºÅ: (1) Cl2(g) + 2I- ©¤¡ú I2 + 2Cl-

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(2)(-)Pt¦òFe2+(c1),Fe3+(c2)¡¬MnO4-(c3),Mn2+(c4),H+(c5)¦òPt(+) (3) Zn + CdSO4 ¡ú ZnSO4 + Cd (3)(-)Zn¦òZnSO4(c1)¡¬CdSO4(c2)¦òCd(+)

5. ÏÂÁÐÎïÖÊÔÚÒ»¶¨Ìõ¼þϾù¿É×÷ΪÑõ»¯¼ÁKMnO4, K2Cr2O7, FeCl3, H2O2, I2, Br2, Cl2, F2, PbO2¡£ÊÔ¸ù¾ÝËüÃÇÔÚËáÐÔ½éÖÊÖжÔÓ¦µÄ±ê×¼µç¼«µçÊÆÊý¾Ý°ÑÉÏÊöÎïÖʰ´ÆäÑõ»¯ÄÜÁ¦µÝÔö˳ÐòÖØÐÂÅÅÁÐ, ²¢Ð´³öËüÃǶÔÓ¦µÄ»¹Ô­²úÎï¡£

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