Question

£¨2013?½­Î÷Ä£Ä⣩ÓÐһƿÂÈ»¯ÄƵÄË®ÈÜÒº£¬Îª²â¶¨ÆäÈÜÖÊÖÊÁ¿·ÖÊý£¬¼×¡¢ÒÒ¡¢±ûÈýλͬѧ·Ö±ðÈ¡Ñù½øÐÐʵÑ飬ËûÃǵÄʵÑéÊý¾ÝÈçϱíËùʾ£º

	¼×	ÒÒ	±û
ËùÈ¡ÂÈ»¯ÄÆÈÜÒºµÄÖÊÁ¿/g	100	100	150
¼ÓÈëÏõËáÒøÈÜÒºµÄÖÊÁ¿/g	300	200	200
Éú³É³ÁµíµÄÖÊÁ¿/g	28.7	28.7	28.7

£¨1£©±ûͬѧʵÑéºó£¬¹ýÂË£¬ËùµÃ·´Ó¦ºóÈÜÒºµÄÈÜÖÊÊÇ

NaCl¡¢NaNO₃

£¨Ìѧʽ£©£®
£¨2£©ÊÔ¼ÆËã´ËÆ¿ÂÈ»¯ÄÆÈÜÒºµÄÈÜÖÊÖÊÁ¿·ÖÊý£®
£¨3£©Ç¡ºÃÍêÈ«·´Ó¦ºóËùµÃÈÜÒºÈÜÖÊÖÊÁ¿·ÖÊýΪ¶àÉÙ£¿

Answer 1

·ÖÎö£º·ÖÎöʵÑéÊý¾Ý±íÖÐËùÈ¡ÂÈ»¯ÄÆÈÜÒºµÄÖÊÁ¿Óë¼ÓÈëÏõËáÒøÈÜÒºÖÊÁ¿µÄ¹Øϵ£¬ÅжÏÁ½ÖÖÈÜҺǡºÃÍêÈ«·´Ó¦µÄʵÑ飻ÀûÓÃÉú³É³ÁµíÂÈ»¯ÒøµÄÖÊÁ¿¸ù¾Ý·´Ó¦µÄ»¯Ñ§·½³Ìʽ£¬¼ÆËãÂÈ»¯ÄÆÈÜÒºµÄÖÊÁ¿ÒÔ¼°Éú³ÉÂÈ»¯ÄƵÄÖÊÁ¿£¬¼´¿ÉÍê³É×îÖÕÖÊÁ¿·ÖÊýµÄ¼ÆË㣮

½â´ð£º½â£º£¨1£©´ÓÊý¾Ý·Ö²¼¹æÂÉ¿´£¬Éú³É28.7g³ÁµíÎïÐèÒªÂÈ»¯ÄÆÈÜÒºµÄÖÊÁ¿100g£¬ÐèÒªÏõËáÒøÈÜÒºµÄÖÊÁ¿200g£¬¶àÓàµÄÈÜҺûÓз´Ó¦£®ËùÒÔ±ûͬѧʵÑéºóÂÈ»¯ÄÆÈÜÒºÓÐÊ£Ó࣬¹ýÂË£¬ËùµÃ·´Ó¦ºóÈÜÒºµÄÈÜÖÊÊÇÂÈ»¯ÄƺÍÏõËáÄÆ£»¹ÊÌNaCl¡¢NaNO₃£»
£¨2£©ÉèÉú³É28.7g³ÁµíÐèÒªÂÈ»¯ÄƵÄÖÊÁ¿Îªx£¬Éú³ÉÏõËáÄƵÄÖÊÁ¿Îªy£®
NaCl+AgNO₃=AgCl¡ý+NaNO₃
58.5      143.5    85
x          28.7g   y

58.5

x

=

143.5

28.7g

x=11.7g

143.5

28.7g

=

85

y

y=17g
´ËÆ¿ÂÈ»¯ÄÆÈÜÒºµÄÈÜÖÊÖÊÁ¿·ÖÊý=

11.7g

100g

¡Á100%=11.7%
£¨3£©Ç¡ºÃÍêÈ«·´Ó¦ºóËùµÃÈÜÒºÈÜÖÊÖÊÁ¿·ÖÊý=

17g

100g+200g-28.7g

¡Á100%=6.3%
´ð£º£¨2£©´ËÆ¿ÂÈ»¯ÄÆÈÜÒºµÄÈÜÖÊÖÊÁ¿·ÖÊý11.7%£»£¨3£©Ç¡ºÃÍêÈ«·´Ó¦ºóËùµÃÈÜÒºÈÜÖÊÖÊÁ¿·ÖÊýΪ6.3%£®

µãÆÀ£º±¾ÌâÄѶȽϴó£¬Äܹ»ÀûÓñí¸ñÖеÄÊý¾Ý¶Ô±È·ÖÎöÈý´ÎʵÑéÖÐÑùÆ·ÖÊÁ¿ÓëËù¼ÓÏõËáÒøÈÜÒºÖÊÁ¿µÄ±ä»¯À´·ÖÎöÇ¡ºÃÍêÈ«·´Ó¦µÄʵÑéÊǽâ´ð±¾ÌâµÄ¹Ø¼ü£®