ÌâÄ¿ÄÚÈÝ
7£®Î¬ÉúËØC£¨ÓÖÃû¿¹»µÑªËᣬ·Ö×ÓʽΪC6H8O6£©¾ßÓнÏÇ¿µÄ»¹ÔÐÔ£¬ÔÚ¿ÕÆøÖÐÒ×±»Ñõ»¯£¬Æ京Á¿¿Éͨ¹ýÔÚÈõËáÐÔÈÜÒºÖÐÓÃÒÑ֪Ũ¶ÈµÄI2ÈÜÒºµÎ¶¨²âµÃ£®¸Ã·´Ó¦µÄ»¯Ñ§·½³ÌʽΪ£ºC6H8O6+I2=C6H6O6+2HIÏÖÓû²â¶¨Ä³ÑùÆ·ÖÐάÉúËØCµÄº¬Á¿£¬¾ßÌåµÄ²½Öè¼°²âµÃµÄÊý¾ÝÈçÏ£ºÈ¡10mL 6mol/L CH3COOH£¬¼ÓÈë100mLÕôÁóË®£¬½«ÈÜÒº¼ÓÈÈÖó·Ðºó·ÅÖÃÀäÈ´£®¾«È·³ÆÈ¡0.2000gÑùÆ·£¬ÈܽâÓÚÉÏÊöÀäÈ´µÄÈÜÒºÖУ®¼ÓÈë1mLµí·Ûָʾ¼Á£¬Á¢¼´ÓÃŨ¶ÈΪ0.05000mol/LµÄI2ÈÜÒº½øÐе樣¬Ö±ÖÁÈÜÒºÖеÄÀ¶É«³ÖÐø°ë·ÖÖÓ²»ÍÊΪֹ£¬¹²ÏûºÄ21.02mL I2ÈÜÒº£»ÔÙƽÐнøÐÐÉÏÊöʵÑé¹ý³ÌÁ½´Î£¬·Ö±ðÏûºÄI2ÈÜÒº21.48mL¡¢20.98mL£®
£¨1£©ÎªºÎ¼ÓÈëµÄCH3COOHÏ¡ÈÜÒºÒªÏȾÖó·Ð¡¢ÀäÈ´ºó²ÅÄÜʹÓãº
Öó·ÐµÄÔÒò£º³ýÈ¥ÈÜÒºÖÐÈܽâµÄO2£»
ÀäÈ´µÄÔÒò£º±ÜÃâάÉúËØC±»O2Ñõ»¯£»
£¨2£©ÁÐʽ¼ÆËãÑùÆ·ÖÐάÉúËØCµÄÖÊÁ¿·ÖÊý£¨ÓðٷÖÊý±íʾ£¬½á¹û±£ÁôÁ½Î»Ð¡Êý£©£º92.4%£®
·ÖÎö £¨1£©¼ÓÈÈÖó·Ð¿ÉÒÔ³ýÈ¥ÈÜÒºÖÐÈܽâµÄÆøÌ壻¸ù¾ÝÌâÖÐÐÅÏ¢¿É֪άÉúËØC¾ßÓнÏÇ¿µÄ»¹ÔÐÔ£»
£¨2£©¼ÆËãµÎ¶¨¹ý³ÌÖÐÏûºÄµâµ¥ÖʵÄÎïÖʵÄÁ¿£¬ÔÙ¸ù¾Ý·½³ÌʽC6H8O6+I2¡úC6H6O6+2HI¼ÆËãÑùÆ·ÖÐάÉúËØCµÄÎïÖʵÄÁ¿£¬½ø¶ø¼ÆËãÖÊÁ¿·ÖÊý£®
½â´ð ½â£º£¨1£©ÓÉÓÚάÉúËØC¾ßÓнÏÇ¿µÄ»¹ÔÐÔ£¬Ò×±»ÑõÆøÑõ»¯£¬Öó·ÐÊÇΪÁ˳ýÈ¥ÈÜÒºÖÐÈÜÒºµÄO2£¬±ÜÃâάÉúËØC±»O2Ñõ»¯£»
¹Ê´ð°¸Îª£º³ýÈ¥ÈÜÒºÖÐÈܽâµÄO2£»±ÜÃâάÉúËØC±»O2Ñõ»¯£»
£¨2£©µÎ¶¨¹ý³ÌÖÐÏûºÄµâµ¥ÖʵÄÎïÖʵÄÁ¿=0.021 L¡Á0.05mol/L£¬¸ù¾Ý·½³ÌʽC6H8O6+I2¡úC6H6O6+2HI¿ÉÖª£¬ÑùÆ·ÖÐάÉúËØCµÄÎïÖʵÄÁ¿=n£¨I2£©=0.021 L¡Á0.05mol/L£¬
ÔòÑùÆ·ÖÐάÉúËØCµÄÖÊÁ¿·ÖÊý=$\frac{0.021L¡Á0.05mol/L¡Á176g/mol}{0.2g}$¡Á100%=92.4%£¬
¹Ê´ð°¸Îª£º92.4%£®
µãÆÀ ±¾ÌâµÎ¶¨ÎªÔØÌ忼²é¸ù¾Ý·½³Ìʽ¼ÆËã¡¢ÎïÖʺ¬Á¿µÄ²â¶¨£¬ÌâÄ¿ÄѶÈÖеȣ¬×¢Òâ¶ÔÌâ¸ÉÐÅÏ¢µÄÌáÈ¡£¬²àÖØÓÚ¿¼²éѧÉú·ÖÎöÄÜÁ¦ºÍ¼ÆËãÄÜÁ¦£®
A£® | ÓÃKIO3Ñõ»¯ËáÐÔÈÜÒºÖеÄKI£º5I-+IO3-+3H2O¨T3I2+6OH- | |
B£® | ÏòNH4HCO3ÈÜÒºÖмӹýÁ¿µÄNaOHÈÜÒº²¢¼ÓÈÈ£ºNH4++OH-$\frac{\underline{\;\;¡÷\;\;}}{\;}$NH3¡ü+H2O | |
C£® | ÐÂÖƵÄÑõ»¯ÂÁ¿ÉÈÜÓÚÇâÑõ»¯ÄÆÈÜÒº£ºAl2O3+2OH-¨T2AlO2-+H2O | |
D£® | ̼ËáÄÆÈÜÒºÖмÓÈë³ÎÇåʯ»ÒË®£ºCa£¨OH£©2+CO32-¨TCaCO3¡ý+2OH- |
±àºÅ | »¯Ñ§·´Ó¦ | Àë×Ó·½³Ìʽ | ÆÀ¼Û |
¢Ù | ÁòËáÈÜÒºÖмÓÈëBa£¨OH£©2ÈÜÒº | Ba2++SO42-¨TBaSO4¡ý | ÕýÈ· |
¢Ú | Ñõ»¯ÂÁÓëNaOHÈÜÒº·´Ó¦ | 2Al3-+302-+20H- ¨T2AlO2-+H20 | ´íÎó£¬Al203²»Ó¦Ð´³ÉÀë×Ó ÐÎʽ |
¢Û | ÌúºÍ×ãÁ¿Ï¡ÏõËá·´Ó¦ | Fe+2H+¨TH2¡ü+Fe2+ | ÕýÈ· |
¢Ü | µÈÎïÖʵÄÁ¿µÄFeBr2ºÍCl2·´Ó¦ | 2Fe2++2Br-+2Cl2¨T2Fe3++Br2+4Cl- | ´íÎó£¬Àë×Ó·½³ÌʽÖÐFe2+ÓëBr-µÄÎïÖʵÄÁ¿Ö®±ÈÓ뻯ѧʽ²»·û |
A£® | ¢Ù | B£® | ¢Ù¢Û | C£® | ¢Ú¢Ü | D£® | ¢Ù¢Ú¢Û¢Ü |
A£® | 1 L 0.1 mol/LµÄ°±Ë®ÖÐÓÐNA¸öNH${\;}_{4}^{+}$ | |
B£® | ³£Î³£Ñ¹Ï£¬8 gO2º¬ÓÐ4NA¸öµç×Ó | |
C£® | ±ê×¼×´¿öÏ£¬22.4 LÈýÂȼ×Í麬ÓÐNA¸ö·Ö×Ó | |
D£® | 1 mol Na±»ÍêÈ«Ñõ»¯Éú³ÉNa2O2£¬Ê§È¥2NAµç×Ó |
A£® | ±ê×¼×´¿öÏ£¬11.2 L NOÓë11.2 L O2»ìºÏºóËùº¬·Ö×ÓÊýΪ0.75NA | |
B£® | pH=13µÄ1.0L Ba£¨OH£©2ÈÜÒºÖк¬ÓеÄOH-ÊýĿΪ0.2NA | |
C£® | 0.1 mol Na2O2¾§ÌåÖк¬ÓÐ0.3NA¸öÀë×Ó | |
D£® | ±ê×¼×´¿öÏ£¬22.4L¼×´¼Öк¬ÓеÄÑõÔ×ÓÊýΪ1.0NA |
A£® | 5s£¾4f£¾4s£¾3d | B£® | 3d£¾4s£¾3p£¾3s | C£® | 4s£¾3s£¾2s£¾1s | D£® | 5s£¾4s£¾4f£¾3d |
A£® | »ìºÏÆøÌåµÄÃܶȲ»Ôٱ仯 | |
B£® | ·´Ó¦ÈÝÆ÷ÖÐYµÄÖÊÁ¿·ÖÊý²»±ä | |
C£® | XµÄ·Ö½âËÙÂÊÓëYµÄÏûºÄËÙÂÊÏàµÈ | |
D£® | µ¥Î»Ê±¼äÄÚÉú³É1 mol YµÄͬʱÉú³É2 mol X |