Question

8£®Ä³Í¬Ñ§²É¼¯ÁËһЩÉúÌúÑùÆ·£¨º¬ÔÓÖÊ£¬ÔÓÖʲ»ÈÜÓÚˮҲ²»ÓëÏ¡ÁòËá·´Ó¦£©²ÉÓÃͼ¼×ËùʾװÖýøÐÐʵÑé³ÆµÃ׶ÐÎÓëÃÞ»¨µÄÖÊÁ¿Îª50g£¬ÉúÌúÑùÆ·ÖеÄÖÊÁ¿Îª3g£¬ÔÚ׶ÐÎÆ¿ÖмÓÈë×ãÁ¿Ï¡ÁòËáºó£¬Á¢¼´¿ªÊ¼¼Ç¼µç×ÓÌìƽµÄʾÊý£¬¼Ç¼Êý¾ÝÈçͼÒÒ£¬ÇëÈÏÕæ·ÖÎöÊý¾Ý£¬»Ø´ðÏÂÁÐÎÊÌ⣺

£¨1£©ÅжÏʵÑéÖÐÉúÌúÑùÆ·ÒѾ­ÍêÈ«·´Ó¦µÄÒÀ¾ÝÊǼÌÐøÏò·´Ó¦ºóµÄÂËÔüÖмÓÈëÏ¡ÁòËᣬÈç¹ûûÓÐÆøÅÝð³ö£¬Ôò˵Ã÷ÉúÌúÑùÆ·ÒѾ­ÍêÈ«·´Ó¦
£¨2£©¸ù¾Ýµç×ÓÌìƽµÄÊý¾Ý±ä»¯½øÐзÖÎö£¬ÒÔÏÂͼÏóÖÐÕýÈ·µÄÊÇB

£¨3£©¼ÆËã·´Ó¦ºóËùµÃÈÜÒºÖÐÁòËáÑÇÌúµÄÖÊÁ¿·ÖÊý£¿

Answer 1

·ÖÎö ÌúºÍÏ¡ÁòËá·´Ó¦Éú³ÉÁòËáÑÇÌúºÍÇâÆø£¬¸ù¾ÝÇâÆøµÄÖÊÁ¿¿ÉÒÔ¼ÆËãÉúÌúÖÐÌúµÄÖÊÁ¿ºÍÁòËáÑÇÌúµÄÖÊÁ¿£¬½øÒ»²½¿ÉÒÔ¼ÆËãÑùÆ·ÖÐÌúµÄÖÊÁ¿·ÖÊýºÍ·´Ó¦ºóËùµÃÈÜÒºÖÐÁòËáÑÇÌúµÄÖÊÁ¿·ÖÊý£®

½â´ð ½â£º£¨1£©Ìú¿ÉÒÔÓëÑÎËá·´Ó¦²úÉúÇâÆø£¬ËùÒÔ¼ÌÐøÏò·´Ó¦ºóµÄÂËÔüÖмÓÈëÏ¡ÁòËᣬÈç¹ûûÓÐÆøÅÝð³ö£¬Ôò˵Ã÷ÉúÌúÑùÆ·ÒѾ­ÍêÈ«·´Ó¦£»¹Ê´ð°¸Îª£º¼ÌÐøÏò·´Ó¦ºóµÄÂËÔüÖмÓÈëÏ¡ÁòËᣬÈç¹ûûÓÐÆøÅÝð³ö£¬Ôò˵Ã÷ÉúÌúÑùÆ·ÒѾ­ÍêÈ«·´Ó¦£»
£¨2£©A¡¢·´Ó¦½áÊøºó£¬ÑùÆ·ÖеÄÔÓÖÊÈÔÈ»´æÔÚ£¬¸ÃÑ¡Ïî²»ÕýÈ·£»
B¡¢Éú³ÉÇâÆøµÄÖÊÁ¿Îª£º200.0g-199.9g=0.1g£¬¸ÃÑ¡ÏîÕýÈ·£»
C¡¢Ëæ×Å·´Ó¦µÄ½øÐУ¬ÈÜÒºÖÊÁ¿ÔÚÔö¼Ó£¬¸ÃÑ¡Ïî²»ÕýÈ·£®
¹ÊÌB£®
£¨2£©ÉèÌúµÄÖÊÁ¿Îªx£¬Éú³ÉÁòËáÑÇÌúµÄÖÊÁ¿Îªy£¬
Fe+H₂SO₄¨TFeSO₄+H₂¡ü£¬
56               152     2
x                   y    0.1g
$\frac{56}{x}=\frac{152}{y}=\frac{2}{0.1g}$£¬
x=2.8g£¬y=7.1g£¬
ÐγÉÈÜÒºµÄÖÊÁ¿Îª£º199.9g-50g-£¨3g-2.8g£©=149.7g£¬
·´Ó¦ºóËùµÃÈÜÒºÖÐÁòËáÑÇÌúµÄÖÊÁ¿·ÖÊýΪ£º$\frac{7.1g}{149.7g}¡Á100%$¡Ö4.74%£¬
´ð£º·´Ó¦ºóËùµÃÈÜÒºÖÐÁòËáÑÇÌúµÄÖÊÁ¿·ÖÊýΪ4.74%£®

µãÆÀ ±¾ÌâÖ÷Òª¿¼²éѧÉúÔËÓüÙÉè·¨ºÍ»¯Ñ§·½³Ìʽ½øÐмÆËãºÍÍƶϵÄÄÜÁ¦£¬¼ÆËãʱҪעÒâ¹æ·¶ÐÔºÍ׼ȷÐÔ£®