Question

8£®Ä³»¯Ñ§ÐËȤС×éÔÚ×öFeºÍCuSO₄ÈÜÒº·´Ó¦ÊµÑéʱ£¬·¢ÏÖÉú³ÉCuµÄͬʱÓÐÆøÅݲúÉú£®ÎªÁ˽øÒ»²½Ñо¿×öÁËÈçÏÂʵÑ飺
£¨1£©È¡8.5¿ËÌú·Û·ÅÈëÒ»¶¨Á¿µÄÁòËáÍ­ÈÜÒºÖУ¬·´Ó¦Íê³Éºó£¬Â˳ö¹ÌÌ壬ϴµÓ¡¢¸ÉÔïºó³ÆÁ¿£¬¹ÌÌåÖÊÁ¿Îª9.2¿Ë£»
£¨2£©½«9.2¿Ë¹ÌÌåÓëÒ»¶¨ÖÊÁ¿·ÖÊýµÄÏ¡ÑÎËá³ä·Ö·´Ó¦£¬ÏûºÄÑÎËá50.0¿Ë£¬¸ù¾ÝʵÑé»æÖÆ·´Ó¦²úÉúÇâÆøµÄÖÊÁ¿Ó뷴Ӧʱ¼äµÄ¹Øϵͼ£¨¼ûͼ£©£®Çó£º
¢ÙÏ¡ÑÎËáµÄÖÊÁ¿·ÖÊý£¬ÓëÏ¡ÑÎËá·´Ó¦µÄÌúµÄÖÊÁ¿£»
¢ÚÓëÁòËáÍ­·´Ó¦µÄÌúµÄÖÊÁ¿£»
¢ÛÓëÁòËáÍ­·´Ó¦µÄÌúµÄÖÊÁ¿¼°ÓëÑÎËá·´Ó¦µÄÌúµÄÖÊÁ¿Ö®ºÍ£¼8.5¿Ë£¨Ñ¡Ìî¡°£¾¡±¡°£¼¡±»ò¡°=¡±£©£®¶Ô´Ë½á¹û×ö³öÄãµÄ½âÊÍ£®

Answer 1

·ÖÎö £¨1£©ÒòΪͭ²»ÓëÑÎËá·´Ó¦£¬¹Ê²úÉúÇâÆøµÄ·´Ó¦ÊÇFeÓëÑÎËá·´Ó¦£®ÀûÓÃFeÓëÑÎËá·´Ó¦µÄ»¯Ñ§·½³ÌʽºÍÉú³ÉÇâÆøµÄÖÊÁ¿£¨ÓÉͼʾÊý¾Ý¿ÉÖª£¬ÍêÈ«·´Ó¦ºóÉú³ÉÇâÆøµÄÖÊÁ¿Îª0.10g£©£¬Áгö±ÈÀýʽ£¬¾Í¿É¼ÆËã³öÓëÏ¡ÑÎËá·´Ó¦µÄFeµÄÖÊÁ¿ºÍÑÎËáµÄÖÊÁ¿£¬È»ºó¸ù¾ÝÈÜÖÊÖÊÁ¿·ÖÊý¹«Ê½¾Í¿É¼ÆËã³öÏ¡ÑÎËáµÄÖÊÁ¿·ÖÊý£»
£¨2£©·ÖÎöÌâÒâ¿ÉÖª£¬9.2g¹ÌÌå¼õÈ¥ÓëÏ¡ÑÎËá·´Ó¦µÄFeµÄÖÊÁ¿¾ÍÊÇÖû»³öµÄÍ­µÄÖÊÁ¿£®ÀûÓÃFeÓëÁòËáÍ­·´Ó¦µÄ»¯Ñ§·½³Ìʽ£¬Áгö±ÈÀýʽ£¬¾Í¿É¼ÆËã³öÓëCuSO₄·´Ó¦µÄFeµÄÖÊÁ¿£»
£¨3£©¼ÆËã³ö¡°ÓëÏ¡ÑÎËá·´Ó¦µÄFeµÄÖÊÁ¿+ÓëCuSO₄·´Ó¦µÄFeµÄÖÊÁ¿¡±Ö®ºÍ£¬Óë8.5g±È½Ï£»¸ù¾ÝÒÑÖªÌõ¼þºÍ¼ÆËã³öµÄÊý¾Ý½øÐзÖÎö£®

½â´ð ½â£º£¨l£©ÉèÓëÏ¡ÑÎËá·´Ó¦µÄFeµÄÖÊÁ¿Îªx£¬ÑÎËáµÄÖÊÁ¿Îªw£®
Fe+2HCl¨TFeCl₂+H₂¡ü
56  73                   2
x    w               0.10g
$\frac{56}{x}$=$\frac{73}{w}$=$\frac{2}{0.10g}$
½âÖ®µÃ£ºx=2.8g£»w=3.65g£»
Ï¡ÑÎËáµÄÖÊÁ¿·ÖÊýΪ£º$\frac{3.65g}{50g}$¡Á100%=7.3%£»
´ð£ºÏ¡ÑÎËáµÄÖÊÁ¿·ÖÊýΪ7.3%£»ÓëÏ¡ÑÎËá·´Ó¦µÄFeµÄÖÊÁ¿Îª2.8g£»
£¨2£©ÉèÓëCuSO₄·´Ó¦µÄFeµÄÖÊÁ¿Îªy£¬
Fe+CuSO₄¨TFeSO₄+Cu
56                            64
y                   9.2g-2.8g
$\frac{56}{64}$=$\frac{y}{9.2g-2.8g}$£¬
½âÖ®µÃ£ºy=5.6g£»
´ð£ºÓëCuSO₄·´Ó¦µÄFeµÄÖÊÁ¿Îª5.6g£»
£¨3£©ÓëCuSO₄·´Ó¦µÄFeµÄÖÊÁ¿¼°ÓëÑÎËá·´Ó¦µÄFeµÄÖÊÁ¿Ö®ºÍΪ£º2.8g+5.6g=8.4g£¼8.5g£»
ÔÚFeºÍCuSO₄ÈÜÒº·´Ó¦ÊµÑéʱ£¬·¢ÏÖÉú³ÉCuµÄͬʱÓÐÆøÅݲúÉú£¬¶øÇÒÓëCuSO₄·´Ó¦µÄFeµÄÖÊÁ¿¼°ÓëÑÎËá·´Ó¦µÄFeµÄÖÊÁ¿Ö®ºÍ£¼8.5g£¬ËµÃ÷ÓÐÉÙÁ¿FeÓëCuSO₄ÈÜÒºÖеÄËáÐÔÎïÖÊ·¢ÉúÁË·´Ó¦£¬²úÉúÁËÇâÆø£®
¹Ê´ð°¸Îª£º£¼£»ÒòΪÓÐÉÙÁ¿FeÓëCuSO₄ÈÜÒºÖеÄËáÐÔÎïÖÊ·¢ÉúÁË·´Ó¦£®

µãÆÀ ¸ù¾Ý»¯Ñ§·½³Ìʽ¼ÆËãʱ£¬µÚÒ»ÒªÕýÈ·Êéд»¯Ñ§·½³Ìʽ£¬µÚ¶þҪʹÓÃÕýÈ·µÄÊý¾Ý£¬µÚÈý¼ÆËã¹ý³ÌÒªÍêÕû£®