ÌâÄ¿ÄÚÈÝ

½ñÓÐÁ½ÖÖÑεÄÏ¡ÈÜÒº£¬·Ö±ðÊÇa molNaXÈÜÒººÍb molNaYÈÜÒº£¬ÏÂÁÐ˵·¨²»ÕýÈ·µÄÊÇ(   )¡£
A£®Èôa=b£¬pH(NaX)>pH (NaY)£¬ÔòÏàͬŨ¶Èʱ£¬ËáÐÔHX>HY
B£®Èôa=b£¬²¢²âµÃc£¨X£­£©="c" (Y£­)+c(HY)£»ÔòÏàͬŨ¶Èʱ£¬ËáÐÔHX>HY
C£®Èôa>b£¬²âµÃc(X£­)=c(Y£­)£¬Ôò¿ÉÍƳöÈÜÒºÖÐc(HX)>c(HY)£¬ÇÒÏàͬŨ¶Èʱ£¬ ËáÐÔHX<HY
D£®ÈôÁ½ÈÜÒºµÈÌå»ý»ìºÏ£¬²âµÃ
Ôò¿ÉÍƳöa+b=0£®2 mol
A

ÊÔÌâ·ÖÎö£ºA¡¢Èôa=b£¬pH(NaX)>pH (NaY)£¬¸ù¾ÝÔ½ÈõԽˮ½âµÃÏàͬŨ¶Èʱ£¬ËáÐÔHX<HY,´íÎó£»B¡¢Èôa=b£¬²¢²âµÃc£¨X£­£©="c" (Y£­)+c(HY)£¬ËµÃ÷Y£­Ë®½â³Ì¶È±ÈX£­´ó£¬¸ù¾ÝÔ½ÈõԽˮ½â½âµÃÏàͬŨ¶Èʱ£¬ËáÐÔHX>HY,ÕýÈ·£»C¡¢a>b£¬²âµÃc(X£­)=c(Y£­)£¬ËµÃ÷X£­Ë®½â³Ì¶È±ÈY£­´ó£¬ËùÒÔÓÐc(HX)>c(HY)£¬ÇÒÏàͬŨ¶Èʱ£¬ ËáÐÔHX<HY£¬ÕýÈ·£»D¡¢Á½ÈÜÒºµÈÌå»ý»ìºÏ£¬ÔòÓÐa="2" [c(X£­)+ c(HX) ],b="2" [c(Y£­)+ c(HY) ],ËùÒÔa+b=2¡Á0£®1mol/L=0£®2 mol/L£¬ÕýÈ·£¬´ð°¸Ñ¡A¡£
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
ÄÆ¡¢Ã¾¡¢Ìú¡¢Í­¼°Æ仯ºÏÎïÔÚ¿ÆÑкÍÉú²úÉú»îÖÐÓй㷺µÄÓ¦Óá£
£¨1£©Mg¡ªH2O2µç³Ø¿ÉÓÃÓÚÇý¶¯ÎÞÈ˼ÝÊ»µÄDZº½Æ÷¡£¸Ãµç³ØÒÔº£Ë®Îªµç½âÖÊÈÜÒº£¬½á¹¹ÈçͼËùʾ¡£µç³Ø¹¤×÷ʱ£¬Õý¼«µÄµç¼«·´Ó¦Ê½         ¡£³£ÎÂÏ£¬Óøõç³Øµç½â200mLµÄ±¥ºÍÁòËáÍ­ÈÜÒº(µç¼«Îª¶èÐԵ缫)£¬·´Ó¦Ê±ÈÜÒºÖÐË®µÄµçÀëƽºâ      Òƶ¯(Ìî¡°Ïò×󡱡°ÏòÓÒ¡±»ò¡°²»¡±)£»µ±ÏûºÄ24mg½ðÊôMg£¬µç½âºóÈÜÒºµÄpH=     (²»¿¼ÂÇÈÜÒºµÄÌå»ý±ä»¯)¡£

£¨2£©ÀûÓõç½â·¨ÔÚÌúÖÆÆ·É϶ÆÍ­¿ÉÒÔ·ÀÖ¹Ìú±»¸¯Ê´£¬ÒÔÏÂ˵·¨ÕýÈ·µÄÊÇ    ¡£
a£®µç¶Æʱ£¬Í­ºÍʯī¶¼¿ÉÒÔ×öÑô¼«£¬¿ÉÈÜÐÔÍ­ÑÎ×÷µç½âÖÊÈÜÒº
b£®µç¶Æ¹ý³ÌÖУ¬Î¶ÈÉý¸ß£¬µç½â·´Ó¦ËÙÂʼӿì
c£®µç¶Æ¹ý³ÌÖУ¬µçÄÜÈ«²¿×ª»¯Îª»¯Ñ§ÄÜ
d£®µç¶Æ¹ý³ÌÖУ¬Í­Àë×ÓÏòÒõ¼«Òƶ¯£¬·¢Éú»¹Ô­·´Ó¦
£¨3£©NaHS¿É×÷Ϊ³Áµí¼Á³ýÈ¥ÈÜÒºÖеÄCu2+¡£³£ÎÂÏ£¬NaHSÈÜÒºÏÔ¼îÐÔ£¬Ô­ÒòÊÇ                   (ÓÃÀë×Ó·½³ÌʽºÍ±ØÒªµÄÎÄ×Ö˵Ã÷)¡£Ïòº¬ÓÐCu2+µÄ·ÏË®ÖмÓÈëÉÙÁ¿NaHS¹ÌÌ壬·ÏË®ÈÜÒºµÄpH      (Ìî¡°Ôö´ó¡±¡°¼õС¡±»ò¡°²»±ä¡±)¡£

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø