ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿ÒÑÖª³£ÎÂʱCH3COOHµÄµçÀëƽºâ³£ÊýΪK¡£¸ÃζÈÏÂÏò20 mL 0.1 mol¡¤L£1 CH3COOHÈÜÒºÖÐÖðµÎ¼ÓÈë0.1 mol¡¤L£1 NaOHÈÜÒº£¬ÆäpH±ä»¯ÇúÏßÈçͼËùʾ(ºöÂÔζȱ仯)¡£ÏÂÁÐ˵·¨ÖдíÎóµÄÊÇ( )
A.aµã±íʾµÄÈÜÒºÖÐc(H+)µÈÓÚ10£3 mol¡¤L£1
B.bµã±íʾµÄÈÜÒºÖÐc(CH3COO£)>c(Na£«)
C.cµã±íʾCH3COOHºÍNaOHÇ¡ºÃ·´Ó¦ÍêÈ«
D.b¡¢dµã±íʾµÄÈÜÒºÖоùµÈÓÚK
¡¾´ð°¸¡¿C
¡¾½âÎö¡¿
A.aµãpH=3£¬Ôòc£¨H+£©=10-3mol/L£¬¹Ê²»Ñ¡A£»
B.ÈÜÒºµçºÉÊغãc£¨Na+£©+c£¨H+£©=c£¨OH-£©+c£¨CH3COO-£©£¬bµãʱ£¬c£¨H+£©£¾c£¨OH-£©£¬ÔòÓÐc£¨CH3COO-£©£¾c£¨Na+£©£¬¹Ê²»Ñ¡B£»
C.´×ËáºÍÇâÑõ»¯ÄÆ·´Ó¦Éú³É´×ËáÄÆ£¬´×ËáÄÆÊÇÇ¿¼îÈõËáÑÎÆäË®ÈÜÒº³Ê¼îÐÔ£¬µ±Ëá¼îÇ¡ºÃ·´Ó¦Ê±ÈÜÒºÓ¦¸Ã³Ê¼îÐÔ£¬µ«CµãÈÜÒº³ÊÖÐÐÔ£¬ËµÃ÷Ëá¹ýÁ¿£¬¹ÊÑ¡C£»
D.b¡¢dÁ½µãÈÜÒºµÄζÈÏàͬ£¬ËùÒÔb¡¢dµã±íʾµÄÈÜÒºÖоùµÈÓÚK£¬¹Ê²»Ñ¡D£»
´ð°¸£ºC
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿