ʵÑé±àºÅ | HAÎïÖʵÄÁ¿Å¨¶È/£¨mol•L-1£© | NaOHÎïÖʵÄÁ¿Å¨¶È/£¨mol•L-1£© | »ìºÏÈÜÒºµÄpH |
¼× | c | 0.2 | pH=7 |
ÒÒ | 0.2 | 0.1 | pH£¾7 |
±û | 0.1 | 0.1 | pH=9 |
·ÖÎö £¨1£©ÈôHAΪǿ£¬ÔòcµÈÓÚ0.2£¬ÈôHAΪÈõËᣬÔòc´óÓÚ0.2£¬ËùÒÔc²»Ò»¶¨Îª0.2£»
£¨2£©ÎªµÈŨ¶ÈNaA¡¢HA»ìºÏÈÜÒº£¬»ìºÏºóÈÜÒºpH£¾7£¬ÔòHAΪÈõËᣬHAµÄµçÀë³Ì¶ÈСÓÚNaAµÄË®½â³Ì¶È£»
£¨3£©Ç¡ºÃ·´Ó¦µÃµ½NaAÈÜÒº£¬¸ù¾ÝÇâÑõ¸ùÀë×ÓÊغãc£¨OH-£©-c£¨HA£©=c£¨H+£©£®
½â´ð ½â£º£¨1£©²»¿¼ÂÇÆäËü×éµÄʵÑé½á¹û£¬µ¥´ÓÒÒ×éÇé¿ö·ÖÎö£¬pH=7£¬ÈôHAΪǿËᣬÔòcµÈÓÚ0.2£¬ÈôHAΪÈõËᣬÔòc´óÓÚ0.2£¬ËùÒÔc²»Ò»¶¨Îª0.2£¬
¹Ê´ð°¸Îª£º·ñ£»
£¨2£©ÎªµÈŨ¶ÈNaA¡¢HA»ìºÏÈÜÒº£¬»ìºÏºóÈÜÒºpH£¾7£¬ÔòHAΪÈõËᣬHAµÄµçÀë³Ì¶ÈСÓÚNaAµÄË®½â³Ì¶È£¬ÈÜÒºÖУºc£¨Na+£©£¾c£¨A-£©£¾c£¨OH-£©£¾c£¨H+£©£¬
¹Ê´ð°¸Îª£º·ñ£»c£¨Na+£©£¾c£¨A-£©£¾c£¨OH-£©£¾c£¨H+£©£»
£¨3£©Ç¡ºÃ·´Ó¦µÃµ½NaAÈÜÒº£¬¸ù¾ÝÇâÑõ¸ùÀë×ÓÊغãc£¨OH-£©-c£¨HA£©=c£¨H+£©=10-9mol/L£¬
¹Ê´ð°¸Îª£º10-9£®
µãÆÀ ±¾Ì⿼²é½ÏΪ×ۺϣ¬Éæ¼°ÁËÑÎÀàË®½â¡¢ÈÜÒºpH¼ÆËã¡¢Àë×ÓŨ¶È´óС±È½Ï֪ʶ£¬ÓÐÒ»¶¨µÄ×ÛºÏÐÔ£¬²àÖØÓÚѧÉúµÄ·ÖÎöÄÜÁ¦ºÍ¼ÆËãÄÜÁ¦µÄ¿¼²é£¬¸ÃÌâµÄÃüÌⷽʽΪ¸ß¿¼ÃüÌâµÄÈȵ㣬±¾ÌâÄѶÈÊÊÖУ®
Ä꼶 | ¸ßÖÐ¿Î³Ì | Ä꼶 | ³õÖÐ¿Î³Ì |
¸ßÒ» | ¸ßÒ»Ãâ·Ñ¿Î³ÌÍƼö£¡ | ³õÒ» | ³õÒ»Ãâ·Ñ¿Î³ÌÍƼö£¡ |
¸ß¶þ | ¸ß¶þÃâ·Ñ¿Î³ÌÍƼö£¡ | ³õ¶þ | ³õ¶þÃâ·Ñ¿Î³ÌÍƼö£¡ |
¸ßÈý | ¸ßÈýÃâ·Ñ¿Î³ÌÍƼö£¡ | ³õÈý | ³õÈýÃâ·Ñ¿Î³ÌÍƼö£¡ |
¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
A£® | µç³Ø¹¤×÷ʱµçÁ÷ÓÉb¼«Ñص¼Ïß¾µÆÅݵ½a¼« | |
B£® | a¼«Îªµç³ØµÄ¸º¼«£¬¸Ãµç¼«·¢ÉúÑõ»¯·´Ó¦ | |
C£® | µç³ØÕý¼«µÄµç¼«·´Ó¦Ê½ÎªO2+2H2O+4e-=4OH- | |
D£® | µç³Ø¹¤×÷ʱ£¬23gÒÒ´¼±»Ñõ»¯×ªÒƵç×ÓʽΪ6mol |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
A£® | µÚ2minʱ£¬c£¨Fe2+£©=0.01 mol•L-1 | |
B£® | »ìºÏÈÜÒºÖУ¬c£¨K+£©=0.01 mol•L-1 | |
C£® | 0¡«2minÄÚ£¬v£¨I-£©=0.01 mol•L-1•min-1 | |
D£® | µÚ2minʱ£¬c£¨Fe3+£©=0.01 mol•L-1 |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º ÌâÐÍ£º½â´ðÌâ
µÎ¶¨ÐòºÅ | ´ý²âÒºÌå»ý£¨mL£© | ËùÏûºÄNaOH±ê×¼ÒºµÄÌå»ý£¨mL£© | ||
µÎ¶¨Ç° | µÎ¶¨ºó | ÏûºÄµÄÌå»ý | ||
1 | 25.00 | x | y | z |
2 | 25.00 | 4.00 | 29.60 | 25.60 |
3 | 25.00 | 0.60 | 26.00 | 25.40 |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
A£® | 0.1mol•L-1NaHCO3ÈÜÒº£ºH+¡¢Al3+¡¢Cl-¡¢CH3COO- | |
B£® | 0.1mol•L-1CuCl2ÈÜÒº£ºK+¡¢NH4+¡¢OH-¡¢S2- | |
C£® | 0.1mol•L-1FeCl2ÈÜÒº£ºNa+¡¢NH4+¡¢I-¡¢SO42- | |
D£® | $\frac{c£¨{H}^{+}£©}{c£¨O{H}^{-}£©}$=1¡Á1013µÄÈÜÒº£ºFe3+¡¢Na+¡¢SO32¡¥¡¢NO3- |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
A£® | MµãËùʾÈÜÒºµ¼µçÄÜÁ¦Ç¿ÓÚQµã | |
B£® | NµãËùʾÈÜÒºÖÐc£¨CH3COO-£©£¾c£¨Na+£© | |
C£® | MµãºÍNµãËùʾÈÜÒºÖÐË®µÄµçÀë³Ì¶È²»Ïàͬ | |
D£® | QµãÏûºÄNaOHÈÜÒºµÄÌå»ýСÓÚ´×ËáÈÜÒºµÄÌå»ý |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
A£® | ÈôpH£¾7ʱ£¬ÔòÒ»¶¨ÊÇC1V1£¾C2V2 | |
B£® | ÈôpH£¼7ʱ£¬»ìºÏÈÜÒºÖпÉÄÜÓÐc£¨Na+£©£¾c£¨H+£© | |
C£® | µ±pH=7ʱ£¬ÈôV1=V2£¬ÔòÒ»¶¨ÊÇC2=C1 | |
D£® | Èô V1=V2£¬C1=C2£¬Ôòc£¨CH3COO-£©+c£¨CH3COOH£©=c£¨Na+£© |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º ÌâÐÍ£ºÑ¡ÔñÌâ
A£® | ÔÚÖкÍÈȵIJⶨʵÑéÖУ¬Ó¦½«¼îÒº»ºÂýµ¹ÈëËáÒºÖУ¬Ê¹·´Ó¦³ä·Ö½øÐÐ | |
B£® | ÓÃNaOH±ê×¼ÈÜÒºµÎ¶¨´×ËáÈÜÒºÖÁÖÐÐÔʱ£¬´×ËáÔò±»ÍêÈ«ÖÐºÍ | |
C£® | ½«Na2S2O3ÈÜÒººÍÏ¡ÁòËá»ìºÏ£¬¿Éͨ¹ý¹Û²ì²úÉúÆøÅݵĿìÂýÀ´Åжϻ¯Ñ§·´Ó¦ËÙÂÊ | |
D£® | ½«Ìú¶¤·ÅÊÔ¹ÜÖУ¬¼ÓÈë2mLË®¡¢3µÎÏ¡´×ËáºÍ1µÎK3[Fe£¨CN£©6]ÈÜÒº£¬²»¾ÃÌú¶¤ÖÜΧ³öÏÖÀ¶É«³Áµí |
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º ÌâÐÍ£º½â´ðÌâ
×°Öà | ʵÑéÇ°µÄÖÊÁ¿/g | ʵÑéºóµÄÖÊÁ¿/g |
F | 22.5 | 33.6 |
H | 42.4 | 51.4 |
²é¿´´ð°¸ºÍ½âÎö>>
°Ù¶ÈÖÂÐÅ - Á·Ï°²áÁбí - ÊÔÌâÁбí
ºþ±±Ê¡»¥ÁªÍøÎ¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨Æ½Ì¨ | ÍøÉÏÓк¦ÐÅÏ¢¾Ù±¨×¨Çø | µçÐÅթƾٱ¨×¨Çø | ÉæÀúÊ·ÐéÎÞÖ÷ÒåÓк¦ÐÅÏ¢¾Ù±¨×¨Çø | ÉæÆóÇÖȨ¾Ù±¨×¨Çø
Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com