ÌâÄ¿ÄÚÈÝ
ÏÂÁи÷ÈÜÒºÖÐ΢Á£µÄÎïÖʵÄÁ¿Å¨¶È¹Øϵ´íÎóµÄÊÇ£¨ £©
A£®0.2mol/L K2CO3ÈÜÒºÖÐc(OH-)=c(HCO-3)+c(H+)+2c(H2CO3)
B£®0.1mol/L NaHAÈÜÒºÖÐÆäÖÐpH=3£¬c(HA-)>c(H+)>c(H2A)>c(A2-)
C£®ÏòNa2SO4ÈÜÒºÖеμÓÏ¡CH3COOHµÃµ½pH=4µÄ»ìºÏÈÜÒºc(Na+)=2c(SO2-4)
D£®pH=aµÄHAÈÜÒºÓëpH=bµÄMOHÈÜÒºÈÎÒâ±È»ìºÏc(H+)+c(M+)=c(OH-)+c(A-)
A£®0.2mol/L K2CO3ÈÜÒºÖÐc(OH-)=c(HCO-3)+c(H+)+2c(H2CO3)
B£®0.1mol/L NaHAÈÜÒºÖÐÆäÖÐpH=3£¬c(HA-)>c(H+)>c(H2A)>c(A2-)
C£®ÏòNa2SO4ÈÜÒºÖеμÓÏ¡CH3COOHµÃµ½pH=4µÄ»ìºÏÈÜÒºc(Na+)=2c(SO2-4)
D£®pH=aµÄHAÈÜÒºÓëpH=bµÄMOHÈÜÒºÈÎÒâ±È»ìºÏc(H+)+c(M+)=c(OH-)+c(A-)
B
±¾Ì⿼²éÈÜÒºÖÐÀë×ÓŨ¶ÈÎÊÌ⣬ҪעÒâÈÜÒºÖдæÔÚµÄÈý¸öÊغãÎÊÌâ¡£AÏîÖ±½Ó¸ù¾ÝÈÜÒºÖеÄÖÊ×ÓÊغ㣬ˮµçÀëµÄÇâÀë×ÓºÍË®µçÀëµÄÇâÑõ¸ùÀë×ÓÎïÖʵÄÁ¿ÏàµÈ£¬AÕýÈ·£»BÏîNaHAÈÜÒºÏÔËáÐÔ£¬¼ÈµçÀë´óÓÚË®½â£¬Ö»¿¼ÂǵçÀ룬c(HA-)>c(H+)>c(A2-)>c(H2A)£¬´íÎó£»CÏî¸ù¾ÝÎïÁÏÊغ㣬Na2SO4ÖÐʼÖÕ´æÔÚc(Na+)=2c(SO2-4)£¬C¶Ô£»DÏî¸ù¾ÝÈÜÒºÖеĵçºÉÊغã¿ÉÖªÕýÈ·¡£
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿