ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿ÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ £¨ £©
A. Á¿Í²Á¿È¡20.0mL 0.500 mol¡¤L£1 H2SO4ÈÜÒºÓÚÉÕ±ÖУ¬¼Ó80 mLË®ÅäÖƳÉ0.100 mol¡¤L£1H2SO4ÈÜÒº B. ÓÃÅäÖÆ100 mL 0.100 0 mol¡¤L£1 KMnO4ÈÜÒº
C. ¹ÌÌå¼ÓÈëÈÝÁ¿Æ¿ÖÐÈܽⲢϡÊÍÖÁ¿Ì¶È£¬ÅäÖƳÉÒ»¶¨ÎïÖʵÄÁ¿Å¨¶ÈµÄÈÜÒº D. 1 g 98%µÄŨÁòËá¼Ó4 gË®ÅäÖƳÉ19.6%µÄÁòËáÈÜÒº
¡¾´ð°¸¡¿D
¡¾½âÎö¡¿A¡¢²»Í¬ÈÜÒº»ìºÏʱÌå»ý²»ÄÜÏà¼Ó£¬20mL H2SO4ÈÜÒºÖмÓ80mlË®£¬ÈÜÒºµÄÌå»ý²»ÊÇ100ml£¬ËùÒÔÅäÖƵÄÁòËáÈÜÒºµÄŨ¶ÈÒ²²»ÊÇ0.100mol¡¤L-1£¬ÕýÈ·µÄÅäÖÆ·½·¨Ó¦ÊÇ£ºÁ¿Í²Á¿È¡20.0mL 0.500 mol¡¤L£1 H2SO4ÈÜÒºÓÚÉÕ±ÖУ¬¼ÓÒ»¶¨Á¿µÄË®Èܽ⣬ÀäÈ´ºóתÒƵ½100mlÈÝÁ¿Æ¿ÖУ¬×îºó¶¨ÈÝ£¬ÕâÑùÅäÖƵÄÁòËáµÄŨ¶È²ÅÊÇ0.100mol¡¤L£1£¬¹ÊA´íÎó£»B¡¢ÅäÖÆ100 mL 0.1000 mol¡¤L£1 KMnO4ÈÜÒº±ØÐëÓõ½100mlÈÝÁ¿Æ¿£¬ÐèÒªµÄÒÇÆ÷ÓÐÉÕ±¡¢Ììƽ¡¢²£Á§°ô¡¢½ºÍ·µÎ¹ÜºÍ100mlÈÝÁ¿Æ¿£¬B´íÎó£»C¡¢ÈÝÁ¿Æ¿ÊǾ«È·¼ÆÁ¿ÒºÌåÌå»ýµÄ²£Á§ÒÇÆ÷£¬²»ÄܼÓÈÈ£¬¹Ê²»ÄÜÔÚÆäÖÐÈܽâ¹ÌÌ壬C´íÎó£»D¡¢ÈÜÒºµÄÖÊÁ¿µÈÓÚÈÜÖʺÍÈܼÁÖÊÁ¿Ö®ºÍ£¬1 g 98%µÄŨÁòËá¼Ó4 gË®ºó£¬ÈÜÒºµÄÖÊÁ¿±äΪÔÀ´µÄ5±¶£¬¹ÊÁòËáµÄÖÊÁ¿·ÖÊý±äΪÔÀ´µÄ1/5£¬¼´ÖÊÁ¿·ÖÊýΪ19.6%£¬DÕýÈ·¡£ÕýÈ·´ð°¸ÎªD¡£