Question

ijͬѧΪ̽¾¿ÌúºÏ½ðÖÐÌúµÄÖÊÁ¿·ÖÊý£¬ÏȺó½øÐÐÁËËÄ´ÎʵÑ飨ÔÓÖʲ»ÓëÏ¡ÁòËá·´Ó¦£©£¬ÊµÑéÊý¾ÝÈçÏÂ±í£º¸ù¾Ý¸ÃͬѧµÄʵÑ飬ÊԻشðÒÔÏÂÎÊÌ⣺

	µÚÒ»´Î	µÚ¶þ´Î	µÚÈý´Î	µÚËÄ´Î
ËùÈ¡ºÏ½ðµÄÖÊÁ¿¨Mg	10	10	20	30
Ëù¼ÓÏ¡ÁòËáµÄÖÊÁ¿¨Mg	100	120	80	X
Éú³ÉÇâÆøµÄÖÊÁ¿¨Mg	0.2	0.2	0.2	Y

£¨1£©ÉϱíµÚËÄ´ÎʵÑéÖкϽðÀïµÄÌúÇ¡ºÃÓëÏ¡ÁòËáÍêÈ«·´Ó¦£¬ÔòÆäÖÐX=

 

Y=

 

£®
£¨2£©¸ÃÍ­ÌúºÏ½ðÖÐÌúµÄÖÊÁ¿·ÖÊýÊǶàÉÙ£¿
£¨3£©Ëù¼ÓÏ¡ÁòËáÈÜÖÊÖÊÁ¿·ÖÊýΪ¶àÉÙ£¿£¨½á¹û±£ÁôÖÁ0.1%£©£®

Answer 1

·ÖÎö£º£¨1£©Ò»¡¢¶þ´ÎʵÑéÏà±È˵Ã÷10gºÏ½ðÓë×ãÁ¿ÁòËá·´Ó¦×î¶àÉú³É0.2gÇâÆø£»Ò»¡¢Èý´ÎʵÑéÏà±È˵Ã÷80gÏ¡ÁòËáÓë×ãÁ¿ºÏ½ð·´Ó¦×î¶àÉú³É0.2gÇâÆø£®¼´10gºÏ½ðÓë80gÏ¡ÁòËáÇ¡ºÃÍêÈ«·´Ó¦Éú³É0.2gÇâÆø£®ÓÉ´Ë¿ÉÒԵõ½X¡¢YµÄÖµ£®
£¨2£©ÓɵÚËÄ´ÎʵÑéÊý¾Ý¸ù¾Ý»¯Ñ§·½³Ìʽ¿ÉÒÔ¼ÆËã³öºÏ½ðÖÐÌúµÄÖÊÁ¿·ÖÊý£®
£¨3£©ÓɵÚËÄ´ÎʵÑéÊý¾Ý¸ù¾Ý»¯Ñ§·½³Ìʽ»¹¿ÉÒÔ¼ÆËã³öÏ¡ÁòËáµÄÈÜÖÊÖÊÁ¿·ÖÊý£®

½â´ð£º½â£º£¨1£©10g£º30g=80g£ºX£¬½âµÃX=240g£»
10g£º30g=0.2g£ºY£¬½âµÃY=0.6g£®
£¨2£©ÉèÌúºÏ½ðÖÐÌúµÄÖÊÁ¿·ÖÊýΪx£®
Fe+H₂SO₄=FeSO₄+H₂¡ü
56                  2
30g¡Áx             0.6g

56

2

=

30g¡Áx

0.6g

£¬x=56%
£¨3£©ÉèÏ¡ÁòËáÖÐÈÜÖÊÖÊÁ¿·ÖÊýΪy£®
Fe+H₂SO₄=FeSO₄+H₂¡ü
56          98
30g¡Á56%  240g¡Áy

56

98

=

30g¡Á56%

240g¡Áy

£¬y¡Ö12.3%
´ð£º£¨1£©X=240g£¬Y=0.6g£»
£¨2£©ÌúºÏ½ðÖÐÌúµÄÖÊÁ¿·ÖÊýΪ56%£»
£¨3£©Ï¡ÁòËáÖÐÈÜÖÊÖÊÁ¿·ÖÊýΪ12.3%£®

µãÆÀ£º±¾ÌâÖ÷Òª¿¼²éÓйػ¯Ñ§·½³ÌʽµÄ¼ÆËãºÍÈÜÖÊÖÊÁ¿·ÖÊýµÄ¼ÆË㣬ÄѶȽϴó£®