Question

½«Ð¿ºÍÁòËáп£¨²»º¬½á¾§Ë®£©µÄ»ìºÏÎï20.8g£¬·ÅÈë179.6gÏ¡ÁòËáÖУ¬Ç¡ºÃÍêÈ«·´Ó¦£¬µÃµ½200g²»±¥ºÍÁòËáпÈÜÒº£®ÊԻشð£º
£¨1£©Ð´³öпºÍÏ¡ÁòËá·´Ó¦µÄ»¯Ñ§·½³Ìʽ

Zn+H₂SO₄¨TZnSO₄+H₂¡ü

£»
£¨2£©Éú³ÉÇâÆøµÄÖÊÁ¿

0.4g

£»
£¨3£©¸ù¾ÝÇâÆøµÄÖÊÁ¿ÁгöÇó½â½ðÊôпµÄÖÊÁ¿£¨x£©µÄ±ÈÀýʽ

65

x

=

2

0.4g

£»
£¨4£©·´Ó¦ºóËùµÃÈÜÒºÖк¬ÁòËáпµÄÖÊÁ¿·ÖÊý

20%

£®

Answer 1

·ÖÎö£º£¨1£©Ð¿ºÍÏ¡ÁòËá·´Ó¦Éú³ÉÁòËáпºÍÇâÆø£¬¿ÉÒԾݴËд³ö¸Ã·´Ó¦µÄ»¯Ñ§·½³Ìʽ£»
£¨2£©¸ù¾ÝÖÊÁ¿Êغ㶨ÂÉ¿ÉÒÔÇóËã³öÉú³ÉµÄÇâÆøµÄÖÊÁ¿£»
£¨3£©¸ù¾Ý·´Ó¦µÄ»¯Ñ§·½³Ìʽ½áºÏÉú³ÉÇâÆøµÄÖÊÁ¿¿ÉÒÔÁгöÇóËãпµÄ±ÈÀýʽ£»
£¨4£©¸ù¾ÝÇâÆøµÄÖÊÁ¿½áºÏ·´Ó¦µÄ»¯Ñ§·½³Ìʽ¿ÉÒÔÇóËã³öÁòËáпµÄÖÊÁ¿£¬²¢¸ù¾ÝÈÜÖʵÄÖÊÁ¿·ÖÊýÇóËã³öÁòËáпµÄÖÊÁ¿·ÖÊý£®

½â´ð£º½â£º£¨1£©Ð¿ºÍÏ¡ÁòËá·´Ó¦Éú³ÉÁòËáпºÍÇâÆø£¬¸Ã·´Ó¦µÄ»¯Ñ§·½³ÌʽΪZn+H₂SO₄¨TZnSO₄+H₂¡ü£»
£¨2£©¸ù¾ÝÖÊÁ¿Êغ㶨ÂÉ¿ÉÒÔÇóËã³öÉú³ÉµÄÇâÆøµÄÖÊÁ¿Îª20.8g+179.6g-200g=0.4g£»
£¨3£©ÉèпµÄÖÊÁ¿Îªx£¬Éú³ÉÁòËáпµÄÖÊÁ¿Îªy
Zn+H₂SO₄¨TZnSO₄+H₂¡ü£»
65        161   2
x          y   0.4g

65

x

=

2

0.4g

161

y

=

2

0.4g

½âµÃ£ºx=13g£¬y=32.2g
£¨4£©ÁòËáпµÄÖÊÁ¿·ÖÊýΪ£º

32.2g+20.8g-13g

200g

¡Á100%=20%£®
¹Ê´ð°¸Îª£º£¨1£©Zn+H₂SO₄¨TZnSO₄+H₂¡ü£»
£¨2£©0.4g£»
£¨3£©

65

x

=

2

0.4g

£¨4£©20%£®

µãÆÀ£ºÒªÏë½â´ðºÃÕâÀàÌâÄ¿£¬Ê×ÏÈ£¬ÒªÀí½âºÍÊì¼Ç¸ù¾Ý»¯Ñ§·´Ó¦·½³ÌʽµÄ¼ÆËã²½ÖèºÍ¸ñʽ£¬ÒÔ¼°ÓëÖ®Ïà¹ØµÄ֪ʶµÈ£®È»ºó£¬¸ù¾ÝËù¸øµÄÎÊÌâÇé¾°£¬½áºÏËùѧµÄÏà¹Ø֪ʶºÍ¼¼ÄÜ£¬Ï¸ÖµطÖÎöÌâÒ⣬²¢Ï¸ÐĵØ̽¾¿¡¢ÍÆÀíºó£¬°´ÕÕÌâÄ¿ÒªÇó½øÐÐÈÏÕæµØÑ¡Ôñ»ò½â´ð¼´¿É£®