Question

¹¤ÒµÉÏ¡°ºîÊÏ¡±ÖƼÖƵõĴ¿¼î²úÆ·Öг£º¬ÓÐÉÙÁ¿µÄNaCl£®Îª²â¶¨´¿¼î²úÆ·ÖÐNa₂CO₃µÄº¬Á¿£¬È¡23gÑùÆ·ÖÃÓÚÉÕ±­ÖУ¬¼ÓË®½«ÆäÈܽ⣬ȻºóÖðµÎµÎÈëÏ¡ÑÎËᣬµ±µÎÈë200gÏ¡ÑÎËáʱ£¬Á½ÕßÇ¡ºÃÍêÈ«·´Ó¦£¬Éú³ÉµÄÆøÌåÈ«²¿Òݳö£¬¹²ÊÕ¼¯µ½8.8gCO2£®
£¨1£©ËùÓÃÏ¡ÑÎËáÖÐÈÜÖʵÄÖÊÁ¿·ÖÊýΪ______£»23gÑùÆ·ÖÐNa₂CO₃µÄÖÊÁ¿Îª______g
£¨2£©·´Ó¦ºóÉÕ±­ÖеÄÈÜҺΪ²»±¥ºÍÈÜÒº£¬ÊÔͨ¹ý¼ÆËãÇó³ö¸ÃÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿£®

Answer 1

¡¾´ð°¸¡¿·ÖÎö£ºÑùÆ·ÖÐ̼ËáÂÈÓëÑÎËá·´Ó¦Éú³ÉÂÈ»¯ÄÆ¡¢Ë®ºÍ¶þÑõ»¯Ì¼ÆøÌ壬¸ù¾ÝÇ¡ºÃÍêÈ«·´Ó¦Ê±·Å³ö¶þÑõ»¯Ì¼µÄÖÊÁ¿£¬¿É¼ÆËã²Î¼Ó·´Ó¦µÄÑÎËáµÄÖÊÁ¿¡¢Ì¼ËáÄƵÄÖÊÁ¿¼°·´Ó¦Éú³ÉµÄÂÈ»¯ÄƵÄÖÊÁ¿£»
ÀûÓÃÈÜÖʵÄÖÊÁ¿·ÖÊý=£¬¼ÆËãËùÓÃÏ¡ÑÎËáÖÐÈÜÖʵÄÖÊÁ¿·ÖÊý£»
·´Ó¦ºóËùµÃ²»±¥ºÍÈÜÒºÖÐÈÜÖÊÂÈ»¯ÄÆÓÉÔ­ÑùÆ·ÖеÄÂÈ»¯Äƺͷ´Ó¦Éú³ÉµÄÂÈ»¯ÄÆÁ½²¿·ÖËù×é³É£¬ÆäÖÊÁ¿ÎªÁ½²¿·ÖÂÈ»¯ÄƵÄÖÊÁ¿ºÍ£®
½â´ð£º½â£º£¨1£©Éè²Î¼Ó·´Ó¦ÑÎËáµÄÖÊÁ¿Îªa£¬Ì¼ËáÄƵÄÖÊÁ¿Îªb£¬
Na₂CO₃+2HCl=2NaCl+CO₂¡ü+H₂O
 106   73         44
  a     b         8.8g
=  a=21.2g
=  b=14.6g
Ï¡ÑÎËáÖÐÈÜÖʵÄÖÊÁ¿·ÖÊý==7.3%
¹Ê´ð°¸Îª£º7.3%£»21.2£»
£¨2£©Éè·´Ó¦Éú³ÉÂÈ»¯ÄƵÄÖÊÁ¿Îªx
Na₂CO₃+2HCl=2NaCl+CO₂¡ü+H₂O
            117   44
             x    8.8g
 
x=23.4g
ÈÜÒºÖÐÈÜÖÊNaClµÄÖÊÁ¿=23.4g+£¨23g-21.2g£©=25.2g
´ð£º¸ÃÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿Îª25.2g£®
µãÆÀ£ºÀûÓ÷´Ó¦µÄ»¯Ñ§·½³Ìʽ±íʾÎïÖʵÄÖÊÁ¿¹Øϵ£¬¸ù¾Ý·´Ó¦ÖÐijһÎïÖʵÄÖÊÁ¿¿É¼ÆËã·´Ó¦ÖÐÆäËüÈκÎÎïÖʵÄÖÊÁ¿£®