Question

¡¾ÌâÄ¿¡¿³£ÎÂÏ£¬½«0.1molCH3COONaºÍ0.05molHClÈÜÓÚË®Åä³É1LÈÜÒº(pH£¼7).

£¨1£©ÓÃÀë×Ó·½³Ìʽ±íʾ¸ÃÈÜÒºÖдæÔÚµÄÈý¸öƽºâÌåϵ______________¡¢_______________¡¢___________________

£¨2£©ÈÜÒºÖи÷Àë×ÓµÄÎïÖʵÄÁ¿Å¨¶ÈÓÉ´óµ½Ð¡Ë³ÐòΪ_____________________________________________________

£¨3£©ÈÜÒºÖÐÁ£×ÓÖÐŨ¶ÈΪ0.1mol/LµÄÊÇ________________£¬Å¨¶ÈΪ0.05mol/LµÄÊÇ____________________

£¨4£©ÎïÖʵÄÁ¿Ö®ºÍΪ0.lmolµÄÁ½ÖÖÁ£×ÓÊÇ______________Óë__________

£¨5£©CH3COO-ºÍOH-µÄÎïÖʵÄÁ¿Ö®ºÍ±ÈH+¶à________mol

Answer 1

¡¾´ð°¸¡¿ CH3COOHCH3COO-£«H+ CH3COO-£«H2OCH3COOH£«OH- H2OH+£«OH- c(Na+)>c(CH3COO-)>c(Cl-)>c(H+) >c(OH-) Na+ Cl- CH3COOH CH3COO- 0.05

¡¾½âÎö¡¿ÊÔÌâ·ÖÎö£º±¾Ì⿼²éÈÜÒºÖÐÁ£×ÓŨ¶È´óСµÄ±È½Ï£¬ÈÜÒºÖÐÁ£×ÓŨ¶ÈµÄ¹Øϵ¡£0.1molCH3COONaºÍ0.05molHCl³ä·Ö·´Ó¦µÃµ½ÎïÖʵÄÁ¿¾ùΪ0.05molµÄNaCl¡¢CH3COOHºÍCH3COONaµÄ»ìºÏÈÜÒº£¬ÈÜÒºµÄÌå»ýΪ1L£¬NaCl¡¢CH3COOHºÍCH3COONaµÄÎïÖʵÄÁ¿Å¨¶È¾ùΪ0.05mol/L¡£

£¨1£©¸ÃÈÜÒºÖдæÔÚ£ºCH3COOHµÄµçÀëƽºâ£¬µçÀë·½³ÌʽΪCH3COOHCH3COO-+H+£»CH3COONaµÄË®½âƽºâ£¬CH3COO-Ë®½âµÄÀë×Ó·½³ÌʽΪCH3COO-+H2OCH3COOH+OH-£»Ë®µÄµçÀëƽºâ£ºH2OH++OH-¡£

£¨2£©ÓÉÓÚÈÜÒºµÄpH7£¬ËµÃ÷CH3COOHµÄµçÀë³Ì¶È´óÓÚCH3COO-µÄË®½â³Ì¶È£¬ÔòÈÜÒºÖÐÀë×ÓÎïÖʵÄÁ¿Å¨¶ÈÓÉ´óµ½Ð¡µÄ˳ÐòΪ£ºc£¨Na+£©c£¨CH3COO-£©c£¨Cl-£©c£¨H+£©c£¨OH-£©¡£

£¨3£©ÈÜÒºÖÐÁ£×ÓŨ¶ÈΪ0.1mol/LµÄÊÇNa+¡£Å¨¶ÈΪ0.05mol/LµÄÊÇCl-¡£

£¨4£©¸ù¾ÝÎïÁÏÊغ㣬ÎïÖʵÄÁ¿Ö®ºÍΪ0.1molµÄÊÇCH3COOHºÍCH3COO-¡£

£¨5£©ÈÜÒºÖеĵçºÉÊغãΪn£¨Na+£©+n£¨H+£©=n£¨Cl-£©+n£¨CH3COO-£©+n£¨OH-£©£¬n£¨CH3COO-£©+n£¨OH-£©-n£¨H+£©=n£¨Na+£©-n£¨Cl-£©=0.1mol-0.05mol=0.05mol¡£