Question

14£®ÔÚÉÕ±­ÖмÓÈëÂÈ»¯ÄƺÍ̼ËáÇâÄƵĹÌÌå»ìºÏÎï10gºó£¬ÔÙ¼ÓÈë68.9gÏ¡ÑÎËáÇ¡ºÃÍêÈ«·´Ó¦£®·´Ó¦¹ý³ÌÓþ«ÃÜÒÇÆ÷²âµÃÉÕ±­Á¬Í¬Ò©Æ·µÄ×ÜÖÊÁ¿£¨m£©Ó뷴Ӧʱ¼ä£¨t£©µÄ¹ØϵÈçͼËùʾ£®ÉÕ±­Á¬Í¬Ò©Æ·µÄÆðʼ×ÜÖÊÁ¿Îª165.0g£¬ÒÑÖª·´Ó¦µÄ»¯Ñ§·½³ÌʽΪ£ºNaHCO₃+HCl¨TNaCl+CO₂¡ü+H₂O£®ÊԻشðÏÂÁÐÎÊÌ⣺
£¨1£©ÍêÈ«·´Ó¦Ê±²úÉú¶þÑõ»¯Ì¼µÄÖÊÁ¿Îª4.4g£®
£¨2£©Ô­»ìºÏÎïÖÐ̼ËáÇâÄƵÄÖÊÁ¿£®
£¨3£©·´Ó¦ºóËùµÃÂÈ»¯ÄÆÈÜÒºÖÐÈÜÖÊÖÊÁ¿·ÖÊý£®

Answer 1

·ÖÎö £¨1£©ÂÈ»¯ÄƺÍ̼ËáÇâÄƵĹÌÌå»ìºÏÎïÓëÏ¡ÑÎËá»ìºÏºó£¬Ì¼ËáÇâÄÆÓëÑÎËá·´Ó¦Éú³ÉÂÈ»¯ÄÆ¡¢Ë®ºÍ¶þÑõ»¯Ì¼£¬ÓÉÓÚ·´Ó¦·Å³öÁ˶þÑõ»¯Ì¼£¬ËùÒÔ·´Ó¦ºóÉÕ±­¼°Ê£ÓàÎïÖʵÄÖÊÁ¿¼õС£¬¼õСµÄÖÊÁ¿¼´ÎªÆøÌå¶þÑõ»¯Ì¼µÄÖÊÁ¿£»
£¨2£©¸ù¾Ý·´Ó¦µÄ»¯Ñ§·½³Ìʽ£¬ÀûÓÃÉú³ÉÆøÌå¶þÑõ»¯Ì¼µÄÖÊÁ¿¿É¼ÆËãÔ­»ìºÏÎïÖÐ̼ËáÇâÄƵÄÖÊÁ¿£¬¹ÌÌå»ìºÏÎïµÄÖÊÁ¿ÓëËùÇó̼ËáÇâÄƵÄÖÊÁ¿²î¼´Îª»ìºÏÎïÖÐÂÈ»¯ÄƵÄÖÊÁ¿£»
£¨3£©Ç¡ºÃÍêÈ«·´Ó¦ºóËùµÃÈÜҺΪÂÈ»¯ÄÆÈÜÒº£¬ÆäÖÐÈÜÖÊÂÈ»¯ÄÆÓÉ»ìºÏÎïÖÐÂÈ»¯Äƺͷ´Ó¦Éú³ÉµÄÂÈ»¯ÄÆËù×é³É£»ÔÙ¸ù¾ÝÈÜÖÊÖÊÁ¿·ÖÊýµÄ¼ÆË㹫ʽ·ÖÎö¼ÆË㣮

½â´ð ½â£º£¨1£©¸ù¾ÝÖÊÁ¿Êغ㶨ÂÉ£¬·´Ó¦Éú³É¶þÑõ»¯Ì¼ÆøÌåµÄÖÊÁ¿=165.0g-160.6g=4.4 g
£¨2£©ÉèÔ­»ìºÏÎïÖÐ̼ËáÇâÄƵÄÖÊÁ¿Îªx£¬Éú³ÉÂÈ»¯ÄƵÄÖÊÁ¿Îªy
NaHCO₃+HCl¨TNaCl+H₂O+CO₂¡ü
84                    58.5            44
x                        y              4.4g
$\frac{84}{x}=\frac{58.5}{y}=\frac{44}{4.4g}$    ½âÖ®µÃ£ºx=8.4g£»y=5.85g
ËùÒÔÔ­»ìºÏÎïÖÐÂÈ»¯ÄƵÄÖÊÁ¿Îª10.0g-8.4g=1.6g
£¨2£©·´Ó¦ºóËùµÃÈÜÒºÖÊÁ¿=68.9 g+10.0g-4.4g=74.5g
·´Ó¦ºóËùµÃÈÜÒºÖÐÈÜÖÊÖÊÁ¿·ÖÊý=$\frac{5.85g+1.6g}{74.5g}¡Á100%$=10%
´ð£º·´Ó¦ºóËùµÃÈÜÒºµÄÈÜÖÊÖÊÁ¿·ÖÊý10%£®
¹Ê´ð°¸Îª£º£¨1£©4.4£»
£¨2£©Ô­»ìºÏÎïÖÐÂÈ»¯ÄƵÄÖÊÁ¿Îª1.6g£»
£¨3£©·´Ó¦ºóËùµÃÂÈ»¯ÄÆÈÜÒºÖÐÈÜÖÊÖÊÁ¿·ÖÊýÊÇ10%£®

µãÆÀ ±¾ÌâÖ÷Òª¿¼²éѧÉúÔËÓû¯Ñ§·½³ÌʽºÍÈÜÖÊÖÊÁ¿·ÖÊý¹«Ê½½øÐмÆËãµÄÄÜÁ¦£¬½âÌâʱҪÌرð×¢Òâ½âÌâ²½ÖèµÄ¹æ·¶ÐÔ£¬´Ó¶øÕÆÎÕͨ¹ýÒÑÖª¼ÆËãδ֪µÄ½âÌâ·½·¨£®