Question

14£®È¡Ö»º¬ÓÐÉÙÁ¿ÂÈ»¯ÄÆÔÓÖʵķÛĩ״´¿¼îÑùÆ·11.4gÓÚÉÕ±­ÖУ¬ÖðµÎ¼ÓÈëÏ¡ÑÎËáÖÁ²»ÔÙ²úÉúÆøÌåΪֹ£¬¹²ÏûºÄÏ¡ÑÎËáµÄÖÊÁ¿Îª50g£¬·´Ó¦ºó³ÆµÃÉÕ±­ÖÐÈÜÒºµÄÖÊÁ¿Îª57g£¨¼Ù¶¨·´Ó¦²úÉúµÄ¶þÑõ»¯Ì¼È«²¿Òݳö£¬Ë®ÕôÆø»Ó·¢ºöÂÔ²»¼Æ£©£®Çë·ÖÎö»Ø´ðÏÂÁÐÎÊÌ⣺
£¨1£©ÔËÓÃÖÊÁ¿Êغ㶨ÂÉ£¬¿ÉÒÔËã³öÌâÖзųö¶þÑõ»¯Ì¼µÄÖÊÁ¿Îª4.4g£®
£¨2£©¼ÆËã·´Ó¦ºóÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿·ÖÊý£¨Ð´³öÏêϸµÄ¼ÆËã¹ý³Ì£¬Êý¾Ý¾«È·µ½l%£©£®

Answer 1

·ÖÎö £¨1£©¸ù¾ÝÖÊÁ¿Êغ㶨ÂÉ£¬·´Ó¦Ç°ºóÉÕ±­ÖÐÎïÖʼõÉÙµÄÖÊÁ¿Îª¶þÑõ»¯Ì¼µÄÖÊÁ¿£»
£¨2£©¸ù¾Ý̼ËáÄÆÓëÑÎËá·´Ó¦µÄ·½³Ìʽ£¬ÓɶþÑõ»¯Ì¼µÄÖÊÁ¿Çó³öÉú³ÉµÄÂÈ»¯ÄƵÄÖÊÁ¿£¬ÔÚ¼ÆËãËùµÃÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿·ÖÊýʱ£¬Òª×¢ÒâÈÜÒºÖеÄÈÜÖÊ°üÀ¨Ô­»ìºÏÎï¾ÍÓеģ¬»¹ÓÐÉú³ÉµÄ£®

½â´ð ½â£º£¨1£©ÓÉÖÊÁ¿Êغ㶨ÂÉ¿ÉÖª£¬Éú³ÉµÄ¶þÑõ»¯Ì¼µÄÖÊÁ¿Îª£º11.4g+50g-57g=4.4g£»
£¨2£©Éè²Î¼Ó·´Ó¦µÄ̼ËáÄƵÄÖÊÁ¿Îªy£¬·´Ó¦ºóÉú³ÉµÄÂÈ»¯ÄƵÄÖÊÁ¿Îªz
Na₂CO₃+2HCl=2NaCl+H₂O+CO₂¡ü
 106    73   117      44
  y           z       4.4g
$\frac{106}{y}$=$\frac{117}{z}$=$\frac{44}{4.4g}$
y=10.6g
z=11.7g
·´Ó¦ºóËùµÃÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿·ÖÊýΪ£º$\frac{11.4g-10.6g+11.7g}{57g}$¡Á100%=21.9%£®
´ð£º£¨1£©·Å³ö¶þÑõ»¯Ì¼µÄÖÊÁ¿Îª 4.4g£»
£¨2£©·´Ó¦ºóËùµÃÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿·ÖÊýΪ21.9%£®

µãÆÀ ±¾ÌâÖ÷Òª¿¼²éÁËѧÉú½â¾öÓйغ¬ÔÓÖÊÎïÖʵĻ¯Ñ§·´Ó¦µÄ¼ÆËãµÄÄÜÁ¦£¬½âÌâ¹Ø¼üÊÇÇó·´Ó¦ºóÈÜÒºÖеÄÈÜÖʵÄÖÊÁ¿Ê±£¬¼ÈÒª¿¼ÂÇÉú³ÉµÄÎïÖÊ£¬ÓÖÒª¿¼ÂÇÔ­»ìºÏÎï¾ÍÓеÄÎïÖÊ£®