Question

8£®³¬ÊÐÂôµÄ´¿¼î²úÆ·ÖÐÍùÍùº¬ÓÐÉÙÁ¿µÄÂÈ»¯ÄÆ£¬Ä³»¯Ñ§ÐËȤС×éµÄͬѧͨ¹ýʵÑéÀ´²â¶¨Ä³´¿¼îÑùÆ·ÖÐ̼ËáÄƵÄÖÊÁ¿·ÖÊý£®ÐËȤС×éÈ¡15g ´¿¼îÑùÆ·£¬ÏòÆäÖÐÖ𽥵μÓÈÜÖÊÖÊÁ¿·ÖÊýΪ10%µÄÏ¡ÑÎËᣬ·Å³öÆøÌåµÄ×ÜÖÊÁ¿ÓëËùµÎÈëÏ¡ÑÎËáµÄÖÊÁ¿¹ØϵÇúÏßÈçͼËùʾ£®Çë¸ù¾ÝÌâÒâ»Ø´ðÎÊÌ⣺
£¨1£©µ±µÎ¼ÓÏ¡ÑÎËáÖÁͼÖÐAµãʱ£¬ÉÕ±­ÖÐÈÜÒºÀïµÄÈÜÖÊÊÇNaCl£®£¨Ð´»¯Ñ§Ê½£©
£¨2£©¸Ã´¿¼îÑùÆ·ÖÐ̼ËáÄƵÄÖÊÁ¿·ÖÊýÊǶàÉÙ£¿£¨Ð´³ö¼ÆËã²½Ö裬¼ÆËã½á¹û¾«È·µ½0.1%£©
£¨3£©Ç¡ºÃÍêÈ«·´Ó¦Ê±£¬ÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿Îª¶àÉÙ£¿

Answer 1

·ÖÎö £¨1£©¸ù¾Ý̼ËáÄÆÓëÑÎËáµÄ·´Ó¦½áºÏͼÏóµÄÒâÒå·ÖÎöµ±µÎ¼ÓÏ¡ÑÎËáÖÁͼÖÐAµãʱ£¬ÉÕ±­ÖÐÈÜÒºÀïµÄÈÜÖÊ£»
£¨2£©¸ù¾ÝÓë̼ËáÄÆ·´Ó¦µÄÑÎËáÖÐÈÜÖʵÄÖÊÁ¿¿ÉÇó³ö̼ËáÄƵÄÖÊÁ¿¡¢Éú³ÉÂÈ»¯ÄƵÄÖÊÁ¿£¬ÓÉ̼ËáÄƵÄÖÊÁ¿¿ÉÇó³ö´¿¼îÑùÆ·ÖÐ̼ËáÄƵÄÖÊÁ¿·ÖÊý£»
£¨3£©¸ù¾Ý»ìºÏÎïÖÐÂÈ»¯ÄƵÄÖÊÁ¿ºÍÉú³ÉÂÈ»¯ÄƵÄÖÊÁ¿¼ÆËã³öÇ¡ºÃÍêÈ«·´Ó¦Ê±ÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿£®

½â´ð ½â£º£¨1£©ÓÉͼÏó¿ÉÖª£¬µ±µÎ¼ÓÏ¡ÑÎËáÖÁͼÖÐAµãʱ£¬Ì¼ËáÄÆÇ¡ºÃÓëÏ¡ÑÎËá·´Ó¦£¬·´Ó¦ÑÎËáµÄÖÊÁ¿ÊÇ73g£¬ÉÕ±­ÖÐÈÜÒºÀïµÄÈÜÖÊÊÇNaCl£»
£¨2£©Ç¡ºÃÓë̼ËáÄÆ·´Ó¦µÄÏ¡ÑÎËáÖÐÈÜÖʵÄÖÊÁ¿Îª£º73g¡Á10%=7.3g£®
Éè̼ËáÄƵÄÖÊÁ¿Îªx£¬Éú³ÉµÄÂÈ»¯ÄƵÄÖÊÁ¿Îªy
Na₂CO₃+2HCl=2NaCl+CO₂¡ü+H₂O
106          73      117   
 x           7.3g       y  
$\frac{106}{x}=\frac{73}{7.3g}=\frac{117}{y}$
½âµÃ£ºx=10.6g    y=11.7g
¸Ã´¿¼îÑùÆ·ÖÐ̼ËáÄƵÄÖÊÁ¿·ÖÊýÊÇ£º$\frac{10.6g}{15g}¡Á100%$¡Ö70.7%
£¨3£©Ç¡ºÃÍêÈ«·´Ó¦Ê±£¬ÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿Îª£º15g-10.6g+11.7g=16.1g
¹Ê´ðΪ£º£¨1£©NaCl£»£¨2£©£¨2£©¸Ã´¿¼îÑùÆ·ÖÐ̼ËáÄƵÄÖÊÁ¿·ÖÊýÊÇ70.7%£»£¨3£©Ç¡ºÃÍêÈ«·´Ó¦Ê±£¬ÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿Îª16.1g

µãÆÀ ±¾ÌâÒªÇóѧÉúÊìϤÍêÈ«·´Ó¦µÄÌص㣬ÄÜÕýÈ·Àí½âÈÜÒººÍÈÜÖʵĹØϵ£¬ÊìÁ·ÔËÓÃÈÜÖʵÄÖÊÁ¿·ÖÊý½øÐмÆË㣬²ÅÄÜÕýÈ·´ðÌ⣮