ÌâÄ¿ÄÚÈÝ
£¨2007?ʯ¾°É½Çøһģ£©¼×¡¢ÒÒÁ½×éͬѧ·Ö±ð¶ÔÒ»ÖÖ¡°ÍпºÏ½ð¡±½øÐÐÁËÈçÏÂ̽¾¿£º
¡¾Ìá³öÎÊÌâ¡¿¸ÃÍпºÏ½ðÖÐ͵ÄÖÊÁ¿·ÖÊýÊǶàÉÙ£¿
¡¾²éÔÄ×ÊÁÏ¡¿
£¨1£©¸ÃºÏ½ð½á¹¹½ôÃÜ£¬Ëùº¬µÄпֻÓв¿·ÖÓëÑÎËá·´Ó¦£»
£¨2£©¸ÃºÏ½ðÄÜÈ«²¿ÈÜÓÚÏ¡ÏõËᣬÉú³ÉCu£¨NO3£©2ºÍZn£¨NO3£©2µÄ»ìºÏÈÜÒº£®
¡¾Éè¼Æ²¢ÊµÑé¡¿
¼××飺³ÆÈ¡7.4gºÏ½ð£¬·ÅÈë×ãÁ¿µÄÑÎËáÖÐÖ±µ½·´Ó¦Í£Ö¹£¬ÊÕ¼¯µ½0.02gÇâÆø£®
ÒÒ×飺³ÆÈ¡7.4gºÏ½ð£¬·ÅÈë×ãÁ¿µÄÏ¡ÏõËáÖУ¬È«²¿Èܽâºó¼ÓÈë×ãÁ¿µÄÌú£¬ÍêÈ«·´Ó¦£¬µÃµ½6.66gÍ£®
¡¾Êý¾Ý´¦Àí¡¿¸ù¾ÝÉÏÊöʵÑé½á¹û£¬ÇëÄã°ïÖúËûÃÇ·Ö±ð¼ÆËã³öºÏ½ðÖÐ͵ÄÖÊÁ¿·ÖÊý£®
¼××飺
ÒÒ×飺
¡¾·´Ë¼ÓëÆÀ¼Û¡¿ÊµÑé²»ºÏÀíµÄ×éÊÇ
¡¾Ìá³öÎÊÌâ¡¿¸ÃÍпºÏ½ðÖÐ͵ÄÖÊÁ¿·ÖÊýÊǶàÉÙ£¿
¡¾²éÔÄ×ÊÁÏ¡¿
£¨1£©¸ÃºÏ½ð½á¹¹½ôÃÜ£¬Ëùº¬µÄпֻÓв¿·ÖÓëÑÎËá·´Ó¦£»
£¨2£©¸ÃºÏ½ðÄÜÈ«²¿ÈÜÓÚÏ¡ÏõËᣬÉú³ÉCu£¨NO3£©2ºÍZn£¨NO3£©2µÄ»ìºÏÈÜÒº£®
¡¾Éè¼Æ²¢ÊµÑé¡¿
¼××飺³ÆÈ¡7.4gºÏ½ð£¬·ÅÈë×ãÁ¿µÄÑÎËáÖÐÖ±µ½·´Ó¦Í£Ö¹£¬ÊÕ¼¯µ½0.02gÇâÆø£®
ÒÒ×飺³ÆÈ¡7.4gºÏ½ð£¬·ÅÈë×ãÁ¿µÄÏ¡ÏõËáÖУ¬È«²¿Èܽâºó¼ÓÈë×ãÁ¿µÄÌú£¬ÍêÈ«·´Ó¦£¬µÃµ½6.66gÍ£®
¡¾Êý¾Ý´¦Àí¡¿¸ù¾ÝÉÏÊöʵÑé½á¹û£¬ÇëÄã°ïÖúËûÃÇ·Ö±ð¼ÆËã³öºÏ½ðÖÐ͵ÄÖÊÁ¿·ÖÊý£®
¼××飺
Éè²úÉú0.02gH2ÐèҪпµÄÖÊÁ¿Îªx£®
Zn+2HCl=ZnCl2+H2¡ü
652
x0.02g
=
x=0.65g
ºÏ½ðÖÐ͵ÄÖÊÁ¿·ÖÊýΪ
¡Á100%=91.2%
Zn+2HCl=ZnCl2+H2¡ü
652
x0.02g
65 |
x |
2 |
0.02g |
x=0.65g
ºÏ½ðÖÐ͵ÄÖÊÁ¿·ÖÊýΪ
7.4g-0.65g |
7.4g |
Éè²úÉú0.02gH2ÐèҪпµÄÖÊÁ¿Îªx£®
Zn+2HCl=ZnCl2+H2¡ü
652
x0.02g
=
x=0.65g
ºÏ½ðÖÐ͵ÄÖÊÁ¿·ÖÊýΪ
¡Á100%=91.2%
Zn+2HCl=ZnCl2+H2¡ü
652
x0.02g
65 |
x |
2 |
0.02g |
x=0.65g
ºÏ½ðÖÐ͵ÄÖÊÁ¿·ÖÊýΪ
7.4g-0.65g |
7.4g |
ÒÒ×飺
ºÏ½ðÖÐ͵ÄÖÊÁ¿·ÖÊýΪ£º
¡Á100%=90.0%
6.66g |
7.4g |
ºÏ½ðÖÐ͵ÄÖÊÁ¿·ÖÊýΪ£º
¡Á100%=90.0%
6.66g |
7.4g |
¡¾·´Ë¼ÓëÆÀ¼Û¡¿ÊµÑé²»ºÏÀíµÄ×éÊÇ
¼×
¼×
£¬ÆäÔÒòÊǼ××éʵÑé·½°¸ÖеÄпδÍêÈ«·´Ó¦£¬ËùÒÔ²âµÃ͵ÄÖÊÁ¿·ÖÊýÆ«¸ß
¼××éʵÑé·½°¸ÖеÄпδÍêÈ«·´Ó¦£¬ËùÒÔ²âµÃ͵ÄÖÊÁ¿·ÖÊýÆ«¸ß
£®·ÖÎö£º¡¾Êý¾Ý´¦Àí¡¿¼××飺¸ù¾ÝпºÍÑÎËá·´Ó¦µÄ·½³ÌʽÖÐÇâÆøºÍпµÄ¹Øϵ¼ÆËãпµÄÖÊÁ¿£¬È»ºó¼ÆËãÖÊÁ¿·ÖÊý£»
ÒÒ×飺¸ù¾ÝÖÊÁ¿·ÖÊýµÄ¹«Ê½Ö±½Ó¼ÆË㣻
¡¾·´Ë¼ÓëÆÀ¼Û¡¿¸ù¾Ý¸ÃºÏ½ð½á¹¹½ôÃÜ£¬Ëùº¬µÄпֻÓв¿·ÖÓëÑÎËá·´Ó¦½øÐжÔʵÑéµÄÆÀ¼Û£®
ÒÒ×飺¸ù¾ÝÖÊÁ¿·ÖÊýµÄ¹«Ê½Ö±½Ó¼ÆË㣻
¡¾·´Ë¼ÓëÆÀ¼Û¡¿¸ù¾Ý¸ÃºÏ½ð½á¹¹½ôÃÜ£¬Ëùº¬µÄпֻÓв¿·ÖÓëÑÎËá·´Ó¦½øÐжÔʵÑéµÄÆÀ¼Û£®
½â´ð£º½â£º¡¾Êý¾Ý´¦Àí¡¿¼××飺¸ù¾ÝпºÍÑÎËá·´Ó¦µÄ·½³ÌʽÖÐÇâÆøºÍпµÄ¹Øϵ¼ÆËãпµÄÖÊÁ¿£¬È»ºó¼ÆËãÖÊÁ¿·ÖÊý£»
ÒÒ×飺¸ù¾ÝÖÊÁ¿·ÖÊýµÄ¹«Ê½Ö±½Ó¼ÆËã
¹Ê´ð°¸Îª£º¼××飺Éè²úÉú0.02 g H2ÐèҪпµÄÖÊÁ¿Îªx£®
Zn+2HCl=ZnCl2+H2¡ü
65 2
x 0.02 g
=
x=0.65 g
ºÏ½ðÖÐ͵ÄÖÊÁ¿·ÖÊýΪ
¡Á100%=91.2%
ÒÒ×飺ºÏ½ðÖÐ͵ÄÖÊÁ¿·ÖÊýΪ£º
¡Á100%=90.0%
¡¾·´Ë¼ÓëÆÀ¼Û¡¿¸ù¾Ý×ÊÁÏÐÅÏ¢¿É֪ʵÑé²»ºÏÀíµÄ×éÊǼ××飻 ¼××éʵÑé·½°¸ÖеÄпδÍêÈ«·´Ó¦£¬ËùÒÔ²âµÃ͵ÄÖÊÁ¿·ÖÊýÆ«¸ß£®
¹Ê´ð°¸Îª£º¼×£» ¼××éʵÑé·½°¸ÖеÄпδÍêÈ«·´Ó¦£¬ËùÒÔ²âµÃ͵ÄÖÊÁ¿·ÖÊýÆ«¸ß£®
ÒÒ×飺¸ù¾ÝÖÊÁ¿·ÖÊýµÄ¹«Ê½Ö±½Ó¼ÆËã
¹Ê´ð°¸Îª£º¼××飺Éè²úÉú0.02 g H2ÐèҪпµÄÖÊÁ¿Îªx£®
Zn+2HCl=ZnCl2+H2¡ü
65 2
x 0.02 g
65 |
x |
2 |
0.02g |
x=0.65 g
ºÏ½ðÖÐ͵ÄÖÊÁ¿·ÖÊýΪ
7.4g-0.65g |
7.4g |
ÒÒ×飺ºÏ½ðÖÐ͵ÄÖÊÁ¿·ÖÊýΪ£º
6.66g |
7.4g |
¡¾·´Ë¼ÓëÆÀ¼Û¡¿¸ù¾Ý×ÊÁÏÐÅÏ¢¿É֪ʵÑé²»ºÏÀíµÄ×éÊǼ××飻 ¼××éʵÑé·½°¸ÖеÄпδÍêÈ«·´Ó¦£¬ËùÒÔ²âµÃ͵ÄÖÊÁ¿·ÖÊýÆ«¸ß£®
¹Ê´ð°¸Îª£º¼×£» ¼××éʵÑé·½°¸ÖеÄпδÍêÈ«·´Ó¦£¬ËùÒÔ²âµÃ͵ÄÖÊÁ¿·ÖÊýÆ«¸ß£®
µãÆÀ£º±¾ÌâÊÇÓйغϽðÖÐ͵ÄÖÊÁ¿·ÖÊýµÄ¼ÆË㣬ÒÀ¾ÝÖÊÁ¿·ÖÊýµÄ¼ÆË㹫ʽ½áºÏÌâÄ¿¸øÓëµÄÐÅÏ¢¼´¿ÉÍê³É£¬ÄѶȲ»´ó£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿