Question

£¨2001ÄêÈ«¹ú¸ß¿¼Ì⣩ÒÑÖªFe₂O₃Ôڸ߯ÖÐÓÐÏÂÁз´Ó¦£ºFe₂O₃£«CO₂¡úFeO£« CO₂£¬·´Ó¦ÐγɵĹÌÌå»ìºÏÎº¬Fe₂O₃ºÍFeO£©ÖУ¬ÔªËØÌúºÍÑõµÄÖÊÁ¿±ÈÓÃm£¨Fe£©¡Ã m£¨O£©±íʾ¡£

£¨1£©ÉÏÊö¹ÌÌå»ìºÏÎïÖУ¬m£¨Fe£©¡Ãm£¨O£©²»¿ÉÄÜÊÇ________£¨Ñ¡Ìîa¡¢b¡¢c£¬¶àÑ¡ ¿Û1·Ö£©¡£

(  )

A. 21¡Ã9    b. 21¡Ã7.5    c. 2l¡Ã6

£¨2£©Èôm£¨Fe£©¡Ãm£¨O£©£½21¡Ã8£¬¼ÆËãFe₂O₃±»CO»¹Ô­µÄ°Ù·ÖÂÊ¡£

£¨3£©ÉèFe₂O₃±»CO»¹Ô­µÄ°Ù·ÖÂÊΪA£¥£¬ÔòA£¥ºÍ»ìºÏÎïÖÐm£¨Fe£©¡Ãm£¨O£©µÄ¹ØϵʽΪ¡²Óú¬m£¨Fe£©¡¢m£¨O£©µÄ´úÊýʽ ±íʾ¡³A£¥£½________¡£

ÇëÔÚÏÂͼÖл­³öA£¥ºÍm£¨Fe£©¡Ãm£¨O£©¹ØϵµÄͼÐΡ£

£¨4£©Èç¹ûFe₂O₃ºÍCOµÄ·´Ó¦·ÖÁ½²½½øÐУº

3Fe₂O₃£«CO¡ú2Fe₃O₄£«CO₂  Fe₃O₄£«CO¡ú3FeO£«CO₂ÊÔ·ÖÎö·´Ó¦ÐγɵĹÌÌå»ìºÏÎï¿ÉÄܵÄ×é³É¼°ÏàÓ¦µÄm£¨Fe£©

¡Ãm£¨O£©¡²Áîm£¨Fe£©¡Ãm£¨O£©£½21¡Ãa£¬Ð´³ödµÄÈ¡Öµ·¶Î§¡³¡£½«½á¹ûÌîÈëÏÂ±í¡£

»ìºÏÎï×é³É£¨Óû¯Ñ§Ê½±íʾ£©	aµÄÈ¡Öµ·¶Î§

 

 

Answer 1

´ð°¸£º
½âÎö£º

£¨1£©£¨ac£©

£¨1£©¡¡¡¡   ÉèFe₂O₃Ô­ÓÐnomol£¬»¹Ô­Ô­·ÖÂÊΪA£¥£¬

ÔòÓУ½£½£¬A%£½£½33.3%

£¨3£©3£­¼ûÏÂͼ

£¨4£©Fe₂O₃¡¢Fe₃O₄  8£¼a£¼9  Fe₂O₃¡¢FeO  6£¼a£¼8 Fe₂O₃¡¢Fe₃O₄ FeO 6£¼a£¼9