Question

ÏòÊ¢ÓÐ22.3g Na₂CO₃ºÍNaCl×é³ÉµÄ»ìºÏ¹ÌÌåµÄÉÕ±­ÖУ¬³ä·ÖÈܽâºó¹²¼Ó143.1gµÄË®£®È»ºóÏòÆäÖÐÖ𽥵μÓÈÜÖÊÖÊÁ¿·ÖÊýΪ10%µÄÏ¡ÑÎËᣨÒÑÖªÂÈ»¯ÄÆÓëÏ¡ÑÎËá²»·´Ó¦£©£¬·Å³öÆøÌåµÄ×ÜÖÊÁ¿ÓëËùµÎÈëÏ¡ÑÎËáµÄÖÊÁ¿¹ØϵÇúÏßÈçͼËùʾ£ºÇë¼ÆË㣺
£¨1£©µ±³ä·Ö·´Ó¦ºó£¬·Å³öÆøÌåµÄÖÊÁ¿Îª¶àÉÙ£¿
£¨2£©»ìºÏÎï¹ÌÌåÖк¬ÓÐNaCl¶àÉÙ¿Ë£¿
£¨3£©µ±µÎ¼ÓÁË73gÏ¡ÑÎËáʱ£¨¼´Aµãʱ£©£¬ÉÕ±­ÖÐΪ²»±¥ºÍÈÜÒº£¬ÊÔͨ¹ý¼ÆËãÇó¸ÃÈÜÒºÖÐËùº¬ÈÜÖʵÄÖÊÁ¿·ÖÊý£¿

Answer 1

·ÖÎö£º¸ù¾Ý̼ËáÄÆÓëÑÎËá·´Ó¦µÄ»¯Ñ§·½³ÌʽºÍHClµÄÖÊÁ¿£¬Áгö±ÈÀýʽ£¬¾Í¿É¼ÆËã³ö²Î¼Ó·´Ó¦µÄ̼ËáÄƵÄÖÊÁ¿¡¢·´Ó¦Éú³ÉµÄÂÈ»¯ÄƵÄÖÊÁ¿ºÍÉú³ÉµÄ¶þÑõ»¯Ì¼µÄÖÊÁ¿£®½ø¶ø¼ÆËã³öÈÜÖÊÖÊÁ¿ºÍÈÜÒºÖÊÁ¿£¬È»ºó¸ù¾ÝÈÜÖÊÖÊÁ¿·ÖÊýµÄ¼ÆËã·½·¨½øÐмÆËã¼´¿É£»

½â´ð£º½â£º¹Û²ìͼÏó¿ÉÖªµ±ÑÎËáµÎ¼Óµ½73gʱ£¬Ì¼ËáÄÆÓëÏ¡ÑÎËáÇ¡ºÃÍêÈ«·´Ó¦£»
73g10%µÄÏ¡ÑÎËáÖк¬HClµÄÖÊÁ¿ÊÇ£º73g¡Á10%=7.3g£¬
Éè²Î¼Ó·´Ó¦µÄ̼ËáÄƵÄÖÊÁ¿Îªx£¬·´Ó¦Éú³ÉµÄÂÈ»¯ÄƵÄÖÊÁ¿Îªy£¬Éú³ÉµÄ¶þÑõ»¯Ì¼µÄÖÊÁ¿Îªz£®
Na₂CO₃+2HCl¨T2NaCl+CO₂¡ü+H₂O
106     73    117  44
x       7.3g   y   z

106

x

=

73

7.3g

=

117

y

=

44

z

½âÖ®µÃ£ºx=10.6g£¬y=11.7g£¬z=4.4g£»
£¨1£©Ôò·´Ó¦ºóÉú³ÉµÄÆøÌåÖÊÁ¿ÊÇ4.4g£»
£¨2£©»ìºÏÎïÖÐÂÈ»¯ÄƹÌÌåµÄÖÊÁ¿Îª£º22.3g-10.6g=11.7g
£¨3£©ÉÕ±­Àï²»±¥ºÍÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿Îª£º11.7g+£¨22.3g-10.6g£©=23.4g£¬
ÉÕ±­Àï²»±¥ºÍÈÜÒºµÄÖÊÁ¿Îª£º22.3g+73g+143.1g-4.4g=234g£¬
ÉÕ±­Àï²»±¥ºÍÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿·ÖÊýΪ£º

23.4g

234g

¡Á100%=10%£®
´ð£ºÆäÖÐÈÜÖʵÄÖÊÁ¿·ÖÊýΪ10%£®

µãÆÀ£º±¾Ìâ½ÏºÃµÄ¿¼²éѧÉúÀûÓÃͼÏóÀ´·ÖÎö»¯Ñ§·´Ó¦µÄÄÜÁ¦£¬Ñ§ÉúÓ¦Ã÷ȷͼÏóÖеĹؼüµã¼°Ïߵı仯Ëù±íʾµÄº¬Ò壬½«Í¼ÏóºÍ»¯Ñ§·´Ó¦½ôÃܽáºÏÊǽâÌâµÄ¹Ø¼üËùÔÚ£®