ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿(1) ÏÖÓÐŨ¶È¾ùΪ0.1 mol¡¤L£1µÄÑÎËá¡¢ÁòËá¡¢´×ËáÈýÖÖÈÜÒº£¬»Ø´ðÏÂÁÐÎÊÌ⣺
¢ÙÈôÈýÖÖÈÜÒºpH·Ö±ðΪa1¡¢a2¡¢a3£¬ÔòËüÃÇpHÓÉСµ½´ó˳ÐòΪ__________¡£
¢Ú·Ö±ðÓÃÒÔÉÏÈýÖÖËáÖк͵ÈÎïÖʵÄÁ¿µÄNaOHÈÜÒºÉú³ÉÕýÑΣ¬ÔòÐèÒªÌå»ý×îÉÙµÄËáΪ________(Ìѧʽ)¡£
(2)³£ÎÂÏ£¬ÒÑÖª0.1 mol¡¤L£1Ò»ÔªËáHAÈÜÒºÖÐc(OH£)/c(H£«)£½1¡Á10£8¡£³£ÎÂÏ£¬0.1 mol¡¤L£1HAÈÜÒºµÄpH£½________£¬¼ÆËãµçÀëƽºâ³£ÊýK£¨HA£©=_________¡£Ð´³ö¸ÃËá(HA)ÓëNaOHÈÜÒº·´Ó¦µÄÀë×Ó·½³Ìʽ£º________________£»
¡¾´ð°¸¡¿a2<a1<a3 H2SO4 3 1.0¡Á10-5 HA£«OH£===A££«H2O
¡¾½âÎö¡¿
ÑÎËá¡¢ÁòËá¾ùΪǿËᣬ´×ËáΪÈõËᣬÇÒÁòËáΪ¶þÔªËᣬËùÒÔ0.1 mol¡¤L£1µÄÑÎËá¡¢ÁòËá¡¢´×ËáÈýÖÖÈÜÒºµÄc(H+)·Ö±ðΪ0.1 mol¡¤L£1¡¢0.2mol¡¤L£1¡¢Ð¡ÓÚ0.1 mol¡¤L£1¡£
(1) ¢Ù¡¢ÇâÀë×ÓŨ¶ÈÔ½´ó£¬pHԽС£¬¹Ê´ð°¸Îª£ºa2<a1<a3£»
¢Ú¡¢ÁòËáΪ¶þÔªËᣬÑÎËáÓë´×ËáΪһԪËᣬ·Ö±ðÓÃÒÔÉÏÈýÖÖÏàͬŨ¶ÈµÄËáÖк͵ÈÎïÖʵÄÁ¿µÄNaOHÈÜÒºÉú³ÉÕýÑΣ¬ÔòÐèÒªÌå»ý×îÉÙµÄËáΪ¶þÔªËáÁòËᣬ
¹Ê´ð°¸Îª£º H2SO4 £»
(2)£½1¡Á10£8£¬c(OH£) ¡Ác(H£«)£½1¡Á10£14£¬½âÖ®µÃc(OH£)£½1¡Á10£11mol/L£¬Ôòc(H£«)£½1¡Á10£3mol/L£¬ËùÒÔÈÜÒºpHΪ3£»¸ù¾ÝµçÀëƽºâ³£Êý
£»Ëá(HA)ÓëNaOHÈÜÒº·´Ó¦µÄÀë×Ó·½³ÌʽHA£«OH£===A££«H2O£»
¹Ê´ð°¸Îª£º3£»1.0¡Á10-5£»HA£«OH£===A££«H2O¡£
![](http://thumb2018.1010pic.com/images/loading.gif)