ÌâÄ¿ÄÚÈÝ
15£®°Ñ2.0mol/L CuSO4ÈÜÒººÍ1.0mol/LFe2£¨SO4£©3ÈÜÒºµÈÌå»ý»ìºÏ£¨¼ÙÉè»ìºÏÈÜÒºµÄÌå»ýµÈÓÚÁ½ÈÜÒºµÄÌå»ýÖ®ºÍ£©£¨1£©ÈÜÒºÖеÄFe3+µÄÎïÖʵÄÁ¿Å¨¶ÈΪ1mol/L£¬SO42-µÄÎïÖʵÄÁ¿Å¨¶ÈΪ2.5mol/L£®
£¨2£©ÈôÈ¡500mLÉÏÊö»ìºÏÈÜÒº²¢Ïò¸Ã»ìºÏÈÜÒºÖмÓÈëmgµÄÌú·Û£¬¾×ã¹»³¤µÄʱ¼ä³ä·Ö·´Ó¦ºó£¬´Ëʱ£¬ÈÜÒºÖеÄFe2+ÎïÖʵÄÁ¿Å¨¶ÈµÈÓÚFe3+µÄÎïÖʵÄÁ¿Å¨¶È£¬Ôòm=5.6£®
·ÖÎö £¨1£©1.0 mol/L Fe2£¨SO4£©3ÈÜÒºÖÐFe3+µÄÎïÖʵÄÁ¿Å¨¶ÈΪ2mol/L£¬SO42-µÄŨ¶ÈΪ3mol/L£¬2.0mol/L CuSO4ÈÜÒºÖÐSO42-µÄŨ¶ÈΪ2mol/L£¬¸ù¾ÝÏ¡ÊͶ¨ÂɼÆË㣻
£¨2£©ÓÉÓÚÑõ»¯ÐÔ£ºFe3+£¾Cu2+£¬¼ÓÈëµÄFeÏÈÓëFe3+·´Ó¦£¬·´Ó¦ºóÈÜÒºÖеÄFe2+ÎïÖʵÄÁ¿Å¨¶ÈµÈÓÚFe3+µÄÎïÖʵÄÁ¿Å¨¶È£¬ÔòCu2+δ²Î¼Ó·´Ó¦£¬½áºÏFe+2 Fe3+=3 Fe2+¼ÆË㣮
½â´ð ½â£º£¨1£©1.0 mol/L Fe2£¨SO4£©3ÈÜÒºÖÐFe3+µÄÎïÖʵÄÁ¿Å¨¶ÈΪ2mol/L£¬SO42-µÄŨ¶ÈΪ3mol/L£¬2.0mol/L CuSO4ÈÜÒºÖÐSO42-µÄŨ¶ÈΪ2mol/L£¬µÈÌå»ý»ìºÏºó£¬ÈÜÒºÖеÄFe3+µÄÎïÖʵÄÁ¿Å¨¶ÈΪ2mol/L¡Á$\frac{1}{2}$=1mol/L£¬ÉèÈÜÒºµÄÌå»ý¾ùΪ1L£¬»ìºÏºóÈÜÒºÖÐSO42-µÄÎïÖʵÄÁ¿Å¨¶ÈΪ$\frac{1L¡Á2mol/L+1L¡Á3mol/L}{2L}$=2.5 mol/L£¬
¹Ê´ð°¸Îª£º1mol/L£»2.5mol/L£»
£¨2£©ÓÉÓÚÑõ»¯ÐÔ£ºFe3+£¾Cu2+£¬¼ÓÈëµÄFeÏÈÓëFe3+·´Ó¦£¬·´Ó¦ºóÈÜÒºÖеÄFe2+ÎïÖʵÄÁ¿Å¨¶ÈµÈÓÚFe3+µÄÎïÖʵÄÁ¿Å¨¶È£¬ÔòCu2+δ²Î¼Ó·´Ó¦£¬500mL»ìºÏÈÜÒºÖÐFe3+µÄÎïÖʵÄÁ¿Îª0.5L¡Á1mol/L=0.5mol£¬
Éè¼ÓÈëµÄFeΪx mol£¬Ôò£º
Fe+2 Fe3+=3 Fe2+
x mol 2x mol 3x mol
ËùÒÔ£º3x=0.5-2x
½âµÃx=0.1
¹Ê¼ÓÈëFeµÄÖÊÁ¿Îª0.1mol¡Á56g/mol=5.6g£¬
¹Ê´ð°¸Îª£º5.6£®
µãÆÀ ±¾Ì⿼²éÎïÖʵÄÁ¿Å¨¶ÈµÄÓйؼÆËã¡¢»¯Ñ§·½³ÌʽµÄ¼ÆËãµÈ£¬×¢Òâ¶ÔÎïÖʵÄÁ¿ÄѶȹ«Ê½µÄÀí½âÓëÁé»îÔËÓ㬣¨2£©ÖйؼüÊÇÅжϷ´Ó¦ÏȺó˳ÐòÎÊÌ⣮
| A£® | Á½Õß¶ÔÓ¦µÄÑõ»¯Îï¾ùΪ¼îÐÔÑõ»¯Îï | |
| B£® | Á½Õߵĵ¥Öʶ¼²»ÄÜÓëÇâÑõ»¯ÄÆÈÜÒº·´Ó¦ | |
| C£® | ³£ÎÂÌõ¼þÏ£¬Á½ÖÖ½ðÊô¶¼ÄÜÈܽâÓÚŨÁòËáÖÐ | |
| D£® | ÖÆ±¸AlCl3¡¢FeCl3£¬¾ù²»ÄܲÉÓý«ÆäÈÜÒºÖ±½ÓÕô¸ÉµÄ·½·¨ |
| A£® | ${\;}_{92}^{235}$UÔ×ÓºËÖк¬ÓÐ92¸öÖÐ×Ó | B£® | ${\;}_{92}^{235}$UÔ×ÓºËÍâÓÐ143¸öµç×Ó | ||
| C£® | ${\;}_{92}^{235}$UµÄÖÊÁ¿ÊýΪ92 | D£® | ${\;}_{92}^{235}$UÓë${\;}_{92}^{238}$U»¥ÎªÍ¬Î»ËØ |
| A£® | ÔÚ¶¡ÏãÓÍ·Ó·Ö×ÓÖÐÖÁÉÙÓÐ12¸öÔ×Ó¹²Æ½Ãæ | |
| B£® | ³£ÎÂÏ£¬1mol¶¡ÏãÓÍ·Ó¿ÉÓë2molBr2·´Ó¦ | |
| C£® | 1moIÏãÀ¼ËØ×î¶àÄÜÓë4molÇâÆø·¢Éú¼Ó³É·´Ó¦ | |
| D£® | ¿ÉÓÃËáÐÔKMnO4ÈÜÒº¼ìÑé¶¡ÏãÓÍ·ÓÖÐÊÇ·ñº¬ÓÐ̼̼˫¼ü |
| A£® | RO | B£® | R2H4 | C£® | HRO2 | D£® | H2R2O4 |
| A£® | 2-¼×»ù¶¡ÍéºÍ2-¼×»ù-1-¶¡Ï© | B£® | CH3£¨CH2£©2CH3ºÍCH3C£¨CH3£©2CH3 | ||
| C£® | D£® |
| A£® | ³£Î³£Ñ¹Ï£¬40gSiCÖк¬ÓÐSi-C¼üµÄÊýĿΪNA | |
| B£® | ±ê×¼×´¿öÏ£¬5.6LO2º¬ÓÐ4 NA¸öµç×Ó | |
| C£® | 53.5gNH4ClÖк¬ÓÐH-Cl¼üµÄÊýĿΪ4NA | |
| D£® | 25¡æÊ±£¬pH=13µÄ1L Ba£¨OH£©2ÈÜÒºÖк¬ÓÐOH-µÄÊýĿΪ0.2NA |
| »ìºÏÎï | Ç¿µç½âÖÊ | Èõµç½âÖÊ | ·Çµç½âÖÊ | |
| A | °±Ë® | H2SO4 | CH3COOH | ¸É±ù |
| B | ÑÎËá | ÇâÑõ»¯ÄÆ | H2SO4 | SO2 |
| C | ´¿¼î | BaSO4 | H2S | ¿ÕÆø |
| D | ÇâÑõ»¯ÄÆÈÜÒº | ʯ»Òʯ | ÈÛÈÚNaCl | ÂÈÆø |
| A£® | A | B£® | B | C£® | C | D£® | D |