ÌâÄ¿ÄÚÈÝ
£¨Ã¿¿Õ2·Ö£¬¹²22·Ö£©
I.ʵÑé²âµÃ0.01mol/LµÄKMnO4µÄÁòËáÈÜÒººÍ0.1mol/LµÄH2C2O4ÈÜÒºµÈÌå»ý»ìºÏºó£¬·´Ó¦ËÙÂʦÔ[mol/(L ¡¤ s)]Ó뷴Ӧʱ¼ät£¨s£©µÄ¹ØϵÈçͼËùʾ¡£»Ø´ðÈçÏÂÎÊÌ⣺
£¨1£©¸Ã·´Ó¦µÄ»¯Ñ§·½³Ìʽ£º
£¨2£©0¡út2ʱ¼ä¶ÎÄÚ·´Ó¦ËÙÂÊÔö´óµÄÔÒòÊÇ£º £¬
£¨3£©t2¡útʱ¼ä¶ÎÄÚ·´Ó¦ËÙÂʼõСµÄÔÒòÊÇ£º £¬
£¨4£©Í¼ÖÐÒõÓ°²¿·Ö¡°Ãæ»ý¡±±íʾt1¡út3ʱ¼äÀï ¡£
£Á£®Mn2+ÎïÖʵÄÁ¿Å¨¶ÈµÄÔö´ó B£®Mn2+ÎïÖʵÄÁ¿µÄÔö¼Ó
C£®SO42-ÎïÖʵÄÁ¿Å¨¶È D£®MnO4-ÎïÖʵÄÁ¿Å¨¶ÈµÄ¼õС
II.Ϊ±È½ÏFe3+ºÍCu2+¶ÔH2O2·Ö½âµÄ´ß»¯Ð§¹û£¬Ä³»¯Ñ§Ñо¿Ð¡×éµÄͬѧ·Ö±ðÉè¼ÆÁËÈçÏÂͼ¼×¡¢ÒÒËùʾµÄʵÑé¡£Çë»Ø´ðÏà¹ØÎÊÌ⣺
£¨1£©¶¨ÐÔ·ÖÎö£ºÈçÉÏͼ¼×¿É¹Û²ì £¬¶¨ÐԱȽϵóö½áÂÛ¡£ÓÐͬѧÌá³ö½«FeCl3¸ÄΪFe2(SO4)3¸üΪºÏÀí£¬ÆäÀíÓÉÊÇ ¡£
£¨2£©¶¨Á¿·ÖÎö£ºÈçÉÏͼÒÒËùʾ£¬ÊµÑéʱ¾ùÒÔÉú³É40mLÆøÌåΪ׼£¬ÆäËû¿ÉÄÜÓ°ÏìʵÑéµÄÒòËؾùÒѺöÂÔ¡£Í¼ÖÐÒÇÆ÷AµÄÃû³ÆΪ £¬ÊµÑéÖÐÐèÒª²âÁ¿µÄÊý¾ÝÊÇ
£¨3£©¼ÓÈë0.01mol MnO2·ÛÄ©ÓÚ60mL H2O2ÈÜÒºÖУ¬ÔÚ±ê×¼×´¿öÏ·ųöÆøÌåÌå»ýºÍʱ¼äµÄ¹ØϵÈçͼËùʾ¡£Éè·Å³öÆøÌåµÄ×ÜÌå»ýΪV mL¡£
¢Ù·Å³öV/3 mLÆøÌåʱËùÐèʱ¼äΪ min¡£
¢Ú¸ÃH2O2ÈÜÒºµÄŨ¶ÈΪ
¢ÛA¡¢B¡¢C¡¢D¸÷µã·´Ó¦ËÙÂÊ¿ìÂýµÄ˳ÐòΪ > > >
I.ʵÑé²âµÃ0.01mol/LµÄKMnO4µÄÁòËáÈÜÒººÍ0.1mol/LµÄH2C2O4ÈÜÒºµÈÌå»ý»ìºÏºó£¬·´Ó¦ËÙÂʦÔ[mol/(L ¡¤ s)]Ó뷴Ӧʱ¼ät£¨s£©µÄ¹ØϵÈçͼËùʾ¡£»Ø´ðÈçÏÂÎÊÌ⣺
£¨1£©¸Ã·´Ó¦µÄ»¯Ñ§·½³Ìʽ£º
£¨2£©0¡út2ʱ¼ä¶ÎÄÚ·´Ó¦ËÙÂÊÔö´óµÄÔÒòÊÇ£º £¬
£¨3£©t2¡útʱ¼ä¶ÎÄÚ·´Ó¦ËÙÂʼõСµÄÔÒòÊÇ£º £¬
£¨4£©Í¼ÖÐÒõÓ°²¿·Ö¡°Ãæ»ý¡±±íʾt1¡út3ʱ¼äÀï ¡£
£Á£®Mn2+ÎïÖʵÄÁ¿Å¨¶ÈµÄÔö´ó B£®Mn2+ÎïÖʵÄÁ¿µÄÔö¼Ó
C£®SO42-ÎïÖʵÄÁ¿Å¨¶È D£®MnO4-ÎïÖʵÄÁ¿Å¨¶ÈµÄ¼õС
II.Ϊ±È½ÏFe3+ºÍCu2+¶ÔH2O2·Ö½âµÄ´ß»¯Ð§¹û£¬Ä³»¯Ñ§Ñо¿Ð¡×éµÄͬѧ·Ö±ðÉè¼ÆÁËÈçÏÂͼ¼×¡¢ÒÒËùʾµÄʵÑé¡£Çë»Ø´ðÏà¹ØÎÊÌ⣺
£¨1£©¶¨ÐÔ·ÖÎö£ºÈçÉÏͼ¼×¿É¹Û²ì £¬¶¨ÐԱȽϵóö½áÂÛ¡£ÓÐͬѧÌá³ö½«FeCl3¸ÄΪFe2(SO4)3¸üΪºÏÀí£¬ÆäÀíÓÉÊÇ ¡£
£¨2£©¶¨Á¿·ÖÎö£ºÈçÉÏͼÒÒËùʾ£¬ÊµÑéʱ¾ùÒÔÉú³É40mLÆøÌåΪ׼£¬ÆäËû¿ÉÄÜÓ°ÏìʵÑéµÄÒòËؾùÒѺöÂÔ¡£Í¼ÖÐÒÇÆ÷AµÄÃû³ÆΪ £¬ÊµÑéÖÐÐèÒª²âÁ¿µÄÊý¾ÝÊÇ
£¨3£©¼ÓÈë0.01mol MnO2·ÛÄ©ÓÚ60mL H2O2ÈÜÒºÖУ¬ÔÚ±ê×¼×´¿öÏ·ųöÆøÌåÌå»ýºÍʱ¼äµÄ¹ØϵÈçͼËùʾ¡£Éè·Å³öÆøÌåµÄ×ÜÌå»ýΪV mL¡£
¢Ù·Å³öV/3 mLÆøÌåʱËùÐèʱ¼äΪ min¡£
¢Ú¸ÃH2O2ÈÜÒºµÄŨ¶ÈΪ
¢ÛA¡¢B¡¢C¡¢D¸÷µã·´Ó¦ËÙÂÊ¿ìÂýµÄ˳ÐòΪ > > >
. I.£¨1£©2KMnO4 + 5H2C2O4 + 3H2SO4 = K2SO4 + 2MnSO4 + 10CO2¡ü+ 8H2O
£¨2£©·´Ó¦·ÅÈÈ£¬ÈÜҺζÈÉý¸ß£¬»¯Ñ§·´Ó¦ËÙÂʼӿì
£¨3£©·´Ó¦ÎïŨ¶ÈϽµ£¬µ¼Ö·´Ó¦ËÙÂʽµµÍ
£¨4£©AD
II. 1£©²úÉúÆøÅݵĿìÂý Ïû³ýÒõÀë×Ó²»Í¬¶ÔʵÑéµÄ¸ÉÈÅ
£¨2£©·ÖҺ©¶· ²úÉú40mLÆøÌåËùÐèµÄʱ¼ä
£¨3£©1 £» 0.09mol/L £» D>C>B>A
£¨2£©·´Ó¦·ÅÈÈ£¬ÈÜҺζÈÉý¸ß£¬»¯Ñ§·´Ó¦ËÙÂʼӿì
£¨3£©·´Ó¦ÎïŨ¶ÈϽµ£¬µ¼Ö·´Ó¦ËÙÂʽµµÍ
£¨4£©AD
II. 1£©²úÉúÆøÅݵĿìÂý Ïû³ýÒõÀë×Ó²»Í¬¶ÔʵÑéµÄ¸ÉÈÅ
£¨2£©·ÖҺ©¶· ²úÉú40mLÆøÌåËùÐèµÄʱ¼ä
£¨3£©1 £» 0.09mol/L £» D>C>B>A
ÂÔ
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿