Question

16£®ÑõÆøµÄʵÑéÊÒÖÆÈ¡ÊÇÒ»ÏîÖØÒªµÄʵÑé»î¶¯£¬ÈÃÎÒÃÇ´Ó¶¨Á¿½Ç¶ÈÈÏʶʵÑéÊÒÖÆÈ¡ÑõÆø£®
£¨1£©ÈôÓüÓÈÈÂÈËá¼ØµÄ·½·¨ÖÆÈ¡ÑõÆø£¬ÒªÊÕ¼¯Âú500mLÑõÆø£¬ÖÁÉÙÐèÏûºÄÂÈËá¼ØµÄÖÊÁ¿ÊǶàÉÙ£¿£¨ÒÑÖªÑõÆøÔÚ¸ÃʵÑéÌõ¼þϵÄÃܶÈΪ1.28g/L£¬½á¹û¾«È·µ½0.1g£©
£¨2£©Ä³Í¬Ñ§³ÆÈ¡8g¸ßÃÌËá¼Ø¼ÓÈÈ£¬²âµÃ¼ÓÈȹý³ÌÖÐÊÔ¹ÜÄÚÊ£Óà¹ÌÌåÖÊÁ¿±ä»¯ÈçϱíËùʾ£º

¼ÓÈÈʱ¼ä	t0	t1	t2	t3
Ê£Óà¹ÌÌåÖÊÁ¿/g	8	7.8	7.5	7.36

¢Ù¼ÓÈȵ½t₃ʱ¹²Éú³ÉÑõÆøµÄÖÊÁ¿Îª0.64g
¢Ú¼ÓÈȵ½t₃ʱ£¬Ê£Óà¹ÌÌåÖÐÓÐÄÄЩ³É·Ö£¿ÖÊÁ¿·Ö±ðÊǶàÉÙ£¿

Answer 1

·ÖÎö £¨1£©ÓÉÖÆÈ¡ÑõÆøµÄÃܶȺÍÌå»ý¼ÆËã³öÑõÆøµÄÖÊÁ¿£¬¸ù¾Ý·´Ó¦µÄ»¯Ñ§·½³ÌʽÁÐʽ¼ÆËã³öÐèÒª³ÆÈ¡ÂÈËá¼ØµÄÖÊÁ¿¼´¿É£®
£¨2£©¢Ù¸ù¾ÝÖÊÁ¿Êغ㶨ÂÉÇó³öÉú³ÉµÄÑõÆøµÄÖÊÁ¿£®
¢Ú¸ù¾ÝÑõÆøµÄÖÊÁ¿Çó³ö·Ö½âµÄ¸ßÃÌËá¼ØµÄÖÊÁ¿¡¢Éú³ÉµÄÃÌËá¼Ø¡¢¶þÑõ»¯Ã̵ÄÖÊÁ¿£¬²¢ÅжÏÊ£Óà¹ÌÌåµÄ³É·Ö£®

½â´ð ½â£º£¨1£©500mLÑõÆø=0.5LÑõÆø£¬ÔòÖÆÈ¡ÑõÆøµÄÖÊÁ¿Îª£º1.28g/L¡Á0.5L=0.64g£¬
ÉèÐèÒª³ÆÈ¡ÂÈËá¼ØµÄÖÊÁ¿Îªx£¬
2KClO₃$\frac{\underline{MnO_2}}{¡÷}$2KCl+3O₂¡ü
245              96
 x              0.64g
$\frac{245}{64}=\frac{x}{0.64g}$  ½âµÃ£ºx=1.63g£®
£¨2£©¢ÙÓÉÖÊÁ¿Êغ㶨ÂÉ¿ÉÖª£¬¼ÓÈȵ½t₃ʱ¹²Éú³ÉÑõÆøµÄÖÊÁ¿Îª8g-7.36g=0.64g
¢ÚÉè²Î¼Ó·´Ó¦µÄ¸ßÃÌËá¼ØµÄÖÊÁ¿Îªy£¬Éú³ÉµÄÃÌËá¼ØΪz¡¢¶þÑõ»¯Ã̵ÄÖÊÁ¿Îªm
2KMnO₄$\frac{\underline{\;\;¡÷\;\;}}{\;}$K₂MnO₄+MnO₂+O₂¡ü
316         197  87  32
y            z    m  0.64g

$\frac{316}{y}=\frac{197}{z}=\frac{87}{m}=\frac{32}{0.64g}$
½âµÃ£ºy=6.32g  z=3.94g  m=1.74g
δ·Ö½âµÄ¸ßÃÌËá¼ØµÄÖÊÁ¿Îª£º8g-6.32g=1.68g
ÓÉÒÔÉϼÆËã¿ÉÖª£¬¼ÓÈȵ½t₃ʱ£¬Ê£Óà¹ÌÌåÖÐÓиßÃÌËá¼ØµÄÖÊÁ¿Îª1.68g£¬ÃÌËá¼ØµÄÖÊÁ¿3.94g£¬¶þÑõ»¯Ã̵ÄÖÊÁ¿Îª1.74g£®
´ð£º£¨1£©ÐèÒª³ÆÈ¡ÂÈËá¼ØµÄÖÊÁ¿Îª1.63g£®£¨2£©0.64g£¬¼ÓÈȵ½t₃ʱ£¬Ê£Óà¹ÌÌåÖÐÓиßÃÌËá¼ØµÄÖÊÁ¿Îª1.68g£¬ÃÌËá¼ØµÄÖÊÁ¿3.94g£¬¶þÑõ»¯Ã̵ÄÖÊÁ¿Îª1.74g

µãÆÀ ±¾ÌâÄѶȲ»´ó£¬ÕÆÎÕ¸ù¾Ý»¯Ñ§·½³ÌʽµÄ¼ÆËã¼´¿ÉÕýÈ·½â´ð±¾Ì⣬½âÌâʱҪעÒâ½âÌâµÄ¹æ·¶ÐÔ£®