ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿³£ÎÂÏ£¬ÏÖÓÐ0.1mol/LµÄNH4HCO3ÈÜÒº£¬pH£½7.8¡£ÒÑÖªº¬µª£¨»òº¬Ì¼£©¸÷΢Á£µÄ·Ö²¼·ÖÊý£¨Æ½ºâʱijÖÖ΢Á£µÄŨ¶ÈÕ¼¸÷ÖÖ΢Á£Å¨¶ÈÖ®ºÍµÄ·ÖÊý£©ÓëpHµÄ¹ØϵÈçÏÂͼËùʾ¡£ÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ£º
A£®µ±ÈÜÒºµÄpH£½9ʱ£¬ÈÜÒºÖдæÔÚÏÂÁйØϵ£ºc£¨NH4£«£©£¾c£¨HCO3££©£¾c£¨NH3¡¤H2O£©£¾c£¨CO32££©
B£®NH4HCO3ÈÜÒºÖдæÔÚÏÂÁÐÊغã¹Øϵ£ºc£¨NH4£«£©£«c£¨NH3¡¤H2O£©£«c£¨H+£©£½c£¨OH££©£«2c£¨CO32££©£«c£¨H2CO3£©
C£®Íù¸ÃÈÜÒºÖÐÖðµÎµÎ¼ÓÇâÑõ»¯ÄÆʱNH4£«ºÍHCO3£Å¨¶ÈÖð½¥¼õС
D£®Í¨¹ý·ÖÎö¿ÉÖª³£ÎÂÏÂKb£¨NH3¡¤H2O£©£¾Ka1£¨H2CO3£©
¡¾´ð°¸¡¿D
¡¾½âÎö¡¿
ÊÔÌâ·ÖÎö£ºA¡¢¸ù¾ÝʾÒâͼ¿ÉÖª£¬µ±ÈÜÒºµÄpH£½9ʱ£¬ÈÜÒºÖдæÔÚÏÂÁйØϵ£ºc£¨HCO3££©£¾c£¨NH4£«£©£¾c£¨NH3¡¤H2O£©£¾c£¨CO32££©£¬´íÎó£»B¡¢¸ù¾ÝÎïÁÏÊغã¿ÉµÃNH4HCO3ÈÜÒºÖдæÔÚÏÂÁÐÊغã¹Øϵ£ºc£¨NH4£«£©£«c£¨NH3¡¤H2O£©£½c£¨CO32££©£«c£¨H2CO3£©£«c£¨HCO3-£©£¬ÒòΪNH4+·¢ÉúË®½â·´Ó¦£¬ËùÒÔc£¨HCO3-£©¡Ùc£¨CO32££©£«c£¨OH££©¡ªc£¨H+£©£¬ÔòCÏîÖйØϵʽ´íÎó£»D¡¢ÒòΪ0.1mol/LµÄNH4HCO3ÈÜÒº£¬pH£½7.8£¬ËµÃ÷HCO3µÄË®½â³Ì¶È´óÓÚNH4+µÄË®½â³Ì¶È£¬¸ù¾ÝÔ½ÈõԽˮ½âµÄ¹æÂɿɵãºKb£¨NH3¡¤H2O£©£¾Ka1£¨H2CO3£©£¬ÕýÈ·¡£