ÌâÄ¿ÄÚÈÝ
ijͬѧÓûÅäÖÆÖÊÁ¿·ÖÊýΪ7%µÄÑÎËáÈÜÒº£¬ÏÖÓÐһƿÑÎËáÈÜÒº£¬Îª²â¶¨Æ¿ÄÚÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿·ÖÊý£¬È¡¸ÃÈÜÒº73gÓÚÉÕ±ÖУ¬¼ÓÈë12.5gʯ»Òʯ£¬Ç¡ºÃÍêÈ«·´Ó¦£¬³ÆµÃÉÕ±ÄÚÊ£ÓàÎïÖʵÄ×ÜÖÊÁ¿ÊÇ81.1g£®Çë¸ù¾ÝÒªÇó»Ø´ðÏÂÁÐÎÊÌ⣺£¨1£©·¢Éú»¯Ñ§·´Ó¦µÄ»¯Ñ§·½³ÌʽΪ
£¨2£©Éú³ÉÆøÌåµÄÖÊÁ¿ÊÇ
£¨3£©¸ù¾ÝÆøÌåµÄÖÊÁ¿ÁгöÇó½âÂÈ»¯ÇâÖÊÁ¿µÄ±ÈÀýʽΪ
£¨4£©Æ¿ÄÚÑÎËáÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿·ÖÊýÊÇ
£¨5£©ÈôÈ¡Ò»¶¨Á¿µÄÆ¿ÄÚÈÜÒºÅäÖÆÈÜÖÊÖÊÁ¿·ÖÊýΪ7%µÄÑÎËáÈÜÒº50g£¬Ðè¼ÓÈëË®µÄÖÊÁ¿ÊÇ g£®
¡¾´ð°¸¡¿·ÖÎö£ºÕâÊÇÒ»µÀ×ÛºÏÌ⣬¿¼²éÁËѧÉú¶ÔÖÊÁ¿Êغ㶨ÂɵÄÀí½â¡¢»¯Ñ§·½³ÌʽµÄ¼ÇÒäºÍÊéд¡¢»¯Ñ§·½³ÌʽµÄ¼ÆËãÒÔ¼°ÈÜÖÊÖÊÁ¿·ÖÊýµÄ¼ÆË㣬»¹ÑµÁ·ÁËѧÉúÈÜҺϡÊ͵ļÆËãÄÜÁ¦£®
½â´ð£º½â£º£¨1£©Ï¡ÑÎËáºÍ̼Ëá¸Æ·´Ó¦Éú³ÉÂÈ»¯¸Æ¡¢Ë®¡¢¶þÑõ»¯Ì¼£¬»¯Ñ§·½³ÌʽΪ£ºCaCO3+2HCl=CaCl2+H2O+CO2¡ü£¬ËùÒÔ´ð°¸Îª£ºCaCO3+2HCl=CaCl2+H2O+CO2¡ü
£¨2£©Éú³ÉÆøÌåµÄÖÊÁ¿µÈÓÚ·´Ó¦Ç°ÎïÖʵÄÖÊÁ¿×ܺͼõÈ¥·´Ó¦ºóÉÕ±ÄÚÎïÖʵÄÖÊÁ¿×ܺͣº73g+12.5g-81.1g=4.4g£¬¹Ê´ð°¸Îª£º4.4g
£¨3£©ÉèÂÈ»¯ÇâµÄÖÊÁ¿Îªx£¬
CaCO3+2HCl=CaCl2+H2O+CO2¡ü
73 44
x 4.4g
ÁбÈÀýʽ
¹Ê´ð°¸Îª![](http://thumb.1010pic.com/pic6/res/czhx/web/STSource/20131029165856622521528/SYS201310291658566225215024_DA/1.png)
£¨4£©ÓÉ
½âµÃx=7.3g£¬ÑÎËáµÄÈÜÖÊÖÊÁ¿·ÖÊýΪ£º
£¬¹Ê´ð°¸Îª£º10%
£¨5£©ÒªÇó¼ÓË®µÄÖÊÁ¿ÐëÏÈÇóÐèÒªÔÈÜÒºµÄÖÊÁ¿£¬ÉèÔÈÜÒºÖÊÁ¿Îªx Ôò
50g×7%=x?10%
Çó³ö x=35g
Ôò¼ÓË®µÄÖÊÁ¿Îª50g-35g=15g£¬
¹Ê´ð°¸Îª£º15g
µãÆÀ£ºµÚ£¨1£©Ìâ-µÚ£¨4£©ÌâÊÇ»ù´¡ÌâѧÉúÄܹ»Í¨¹ý¼òµ¥µÄ˼¿¼±È½Ï¿ìµÄ´ð³öÀ´£¬µÚ£¨5£©ÌâÊÇÒ»µÀ¾ßÓÐÒ»¶¨Ë¼Î¬Éî¶ÈµÄÌâÄ¿£¬ÒªÏÈ˼¿¼¼ÓË®ÊÇÔÚÔÈÜÒºµÄ»ù´¡ÉϼÓË®µ½50¿Ë£¬ÕâÑù¾ÍÐèÒª¼ÆËã³öÔÏÈÈÜÒºµÄÖÊÁ¿£¬È»ºó¾ÍÓÈжø½âÁË£®
½â´ð£º½â£º£¨1£©Ï¡ÑÎËáºÍ̼Ëá¸Æ·´Ó¦Éú³ÉÂÈ»¯¸Æ¡¢Ë®¡¢¶þÑõ»¯Ì¼£¬»¯Ñ§·½³ÌʽΪ£ºCaCO3+2HCl=CaCl2+H2O+CO2¡ü£¬ËùÒÔ´ð°¸Îª£ºCaCO3+2HCl=CaCl2+H2O+CO2¡ü
£¨2£©Éú³ÉÆøÌåµÄÖÊÁ¿µÈÓÚ·´Ó¦Ç°ÎïÖʵÄÖÊÁ¿×ܺͼõÈ¥·´Ó¦ºóÉÕ±ÄÚÎïÖʵÄÖÊÁ¿×ܺͣº73g+12.5g-81.1g=4.4g£¬¹Ê´ð°¸Îª£º4.4g
£¨3£©ÉèÂÈ»¯ÇâµÄÖÊÁ¿Îªx£¬
CaCO3+2HCl=CaCl2+H2O+CO2¡ü
73 44
x 4.4g
ÁбÈÀýʽ
![](http://thumb.1010pic.com/pic6/res/czhx/web/STSource/20131029165856622521528/SYS201310291658566225215024_DA/0.png)
¹Ê´ð°¸Îª
![](http://thumb.1010pic.com/pic6/res/czhx/web/STSource/20131029165856622521528/SYS201310291658566225215024_DA/1.png)
£¨4£©ÓÉ
![](http://thumb.1010pic.com/pic6/res/czhx/web/STSource/20131029165856622521528/SYS201310291658566225215024_DA/2.png)
![](http://thumb.1010pic.com/pic6/res/czhx/web/STSource/20131029165856622521528/SYS201310291658566225215024_DA/3.png)
£¨5£©ÒªÇó¼ÓË®µÄÖÊÁ¿ÐëÏÈÇóÐèÒªÔÈÜÒºµÄÖÊÁ¿£¬ÉèÔÈÜÒºÖÊÁ¿Îªx Ôò
50g×7%=x?10%
Çó³ö x=35g
Ôò¼ÓË®µÄÖÊÁ¿Îª50g-35g=15g£¬
¹Ê´ð°¸Îª£º15g
µãÆÀ£ºµÚ£¨1£©Ìâ-µÚ£¨4£©ÌâÊÇ»ù´¡ÌâѧÉúÄܹ»Í¨¹ý¼òµ¥µÄ˼¿¼±È½Ï¿ìµÄ´ð³öÀ´£¬µÚ£¨5£©ÌâÊÇÒ»µÀ¾ßÓÐÒ»¶¨Ë¼Î¬Éî¶ÈµÄÌâÄ¿£¬ÒªÏÈ˼¿¼¼ÓË®ÊÇÔÚÔÈÜÒºµÄ»ù´¡ÉϼÓË®µ½50¿Ë£¬ÕâÑù¾ÍÐèÒª¼ÆËã³öÔÏÈÈÜÒºµÄÖÊÁ¿£¬È»ºó¾ÍÓÈжø½âÁË£®
![](http://thumb2018.1010pic.com/images/loading.gif)
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿