ÌâÄ¿ÄÚÈÝ
ÏÂÁÐ˵·¨²»ÕýÈ·µÄÊÇ
)£¾c(OH-)£¾c(H+)
B.ÔÚ´óÊÔ¹ÜÖмÓÈë5.10 mL 1 mol¡¤L-1 HCl£¬ÔÙ¼ÓÈë1 mLË®²£Á§£¬È»ºóÓÃÁ¦Õñµ´£¬¿ÉÖÆµÃ¹èËáÈܽº
C.Ïò°±Ë®ÖÐÖðµÎµÎÈëÑÎËáÖÁÈÜÒºµÄpH£½7£¬Ôò»ìºÏÒºÖУºc(
)=c(Cl-)
D.pH£½13µÄNaOHÈÜÒºÓëpH£½1µÄCH3COOHÈÜÒºµÈÌå»ý»ìºÏºóËùµÃÈÜÒºµÄpH£¾7
D
µÄË®½â³Ì¶È(
+H2O
H2CO3+OH-)´óÓÚµçÀë³Ì¶È(![]()
H++
)£¬Àë×ÓŨ¶È´óС˳ÐòΪ£ºc(Na+)£¾c(
)£¾c(OH-)£¾c(H+)£¬¹ÊAÏîÕýÈ·£»BÏîÊÇʵÑéÊÒÖÆÈ¡¹èËáÈܽºµÄ·½·¨£¬ÕýÈ·£»¸ù¾ÝµçºÉÊØºãÔÀí£ºc(
)£«c(H+)=c(Cl-)+c(OH-)£¬µ±pH=7£¬¼´c(H+)=c(OH-)ʱ£¬c(
)=c(Cl-)£¬CÏîÕýÈ·£»ÒòCH3COOHÊÇÈõËᣬpH=1µÄCH3COOH£¬c(CH3COOH)Ô¶Ô¶´óÓÚ0.1 mol¡¤L-1£¬¹ÊpH£½13µÄNaOHÈÜÒºÓëpH£½1µÄCH3COOHÈÜÒºµÈÌå»ý»ìºÏºó£¬CH3COOHÔ¶Ô¶¹ýÁ¿£¬ËùµÃÈÜÒº³ÊËáÐÔ£¬¼´pH£¼7£¬DÏî´íÎó.
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿