ÌâÄ¿ÄÚÈÝ
ÔÚ»¨Æ¿ÖмÓÈë¡°ÏÊ»¨±£ÏʼÁ¡±£¬ÄÜÑÓ³¤ÏÊ»¨µÄÊÙÃü£®Ï±íÊÇ500mL¡°ÏÊ»¨±£ÏʼÁ¡±Öк¬Óеijɷ֣¬ÔĶÁºó»Ø´ðÏÂÁÐÎÊÌ⣺
£¨1£©ÏÂÁС°ÏÊ»¨±£ÏʼÁ¡±µÄ³É·ÖÖУ¬ÊôÓڷǵç½âÖʵÄÊÇ
A£®ÕáÌÇ B£®ÁòËá¼Ø C£®¸ßÃÌËá¼Ø D£®ÏõËáÒø
£¨2£©¡°ÏÊ»¨±£ÏʼÁ¡±ÖÐK+£¨°¢Ë¾Æ¥ÁÖÖв»º¬K+£©µÄÎïÖʵÄÁ¿Å¨¶ÈΪ
£¨3£©ÅäÖÆÉÏÊö¡°ÏÊ»¨±£ÏʼÁ¡±Óõ½µÄ²£Á§ÒÇÆ÷ÓÐÁ¿Í²¡¢²£Á§°ô¡¢ÉÕ±£¬»¹È±ÉÙ
£¨4£©ÅäÖÆÈÜҺʱÓÐÒÔϼ¸¸ö²Ù×÷£º
¢ÙÈܽ⡡ ¢ÚÒ¡ÔÈ¡¡ ¢ÛÏ´µÓ¡¡ ¢ÜÀäÈ´¡¡ ¢Ý³ÆÁ¿¡¡ ¢ÞתÒÆÈÜÒº ¢ß¶¨ÈÝ
ÕýÈ·µÄ²Ù×÷˳ÐòÊÇ
£¨5£©ÔÚÈÜÒºÅäÖƹý³ÌÖУ¬ÏÂÁвÙ×÷¶ÔÅäÖƽá¹ûûÓÐÓ°ÏìµÄÊÇ
A£®¶¨ÈÝʱ¸©ÊÓÈÝÁ¿Æ¿¿Ì¶ÈÏß
B£®ÈÝÁ¿Æ¿ÔÚʹÓÃǰδ¸ÉÔÀïÃæÓÐÉÙÁ¿ÕôÁóË®
C£®ÈÝÁ¿Æ¿ÔÚʹÓÃÇ°¸Õ¸ÕÅäÖÆÍêÒ»¶¨ÎïÖʵÄÁ¿Å¨¶ÈµÄNaClÈÜÒº¶øδϴ¾»
D£®¶¨ÈÝÒ¡ÔȺó·¢ÏÖÒºÃæµÍÓÚÈÝÁ¿Æ¿µÄ¿Ì¶ÈÏߣ¬µ«Î´×öÈκδ¦Àí£®
³É·Ö | ÖÊÁ¿£¨g£© | Ħ¶ûÖÊÁ¿£¨g?mol-1£© |
ÕáÌÇ | 25.00 | 342 |
ÁòËá¼Ø | 0.25 | 174 |
°¢Ë¾Æ¥ÁÖ | 0.17 | 180 |
¸ßÃÌËá¼Ø | 0.25 | 158 |
ÏõËáÒø | 0.02 | 170 |
A
A
£®A£®ÕáÌÇ B£®ÁòËá¼Ø C£®¸ßÃÌËá¼Ø D£®ÏõËáÒø
£¨2£©¡°ÏÊ»¨±£ÏʼÁ¡±ÖÐK+£¨°¢Ë¾Æ¥ÁÖÖв»º¬K+£©µÄÎïÖʵÄÁ¿Å¨¶ÈΪ
0.009
0.009
mol/L£®£¨¼ÆËã½á¹û±£ÁôÈýλСÊý£©£¨3£©ÅäÖÆÉÏÊö¡°ÏÊ»¨±£ÏʼÁ¡±Óõ½µÄ²£Á§ÒÇÆ÷ÓÐÁ¿Í²¡¢²£Á§°ô¡¢ÉÕ±£¬»¹È±ÉÙ
500mLÈÝÁ¿Æ¿
500mLÈÝÁ¿Æ¿
£¬½ºÍ·µÎ¹Ü
½ºÍ·µÎ¹Ü
£¨ÔÚºáÏßÉÏÌîдËùȱÒÇÆ÷µÄÃû³Æ£©£¨4£©ÅäÖÆÈÜҺʱÓÐÒÔϼ¸¸ö²Ù×÷£º
¢ÙÈܽ⡡ ¢ÚÒ¡ÔÈ¡¡ ¢ÛÏ´µÓ¡¡ ¢ÜÀäÈ´¡¡ ¢Ý³ÆÁ¿¡¡ ¢ÞתÒÆÈÜÒº ¢ß¶¨ÈÝ
ÕýÈ·µÄ²Ù×÷˳ÐòÊÇ
¢Ý¢Ù¢Ü¢Þ¢Û¢ß¢Ú
¢Ý¢Ù¢Ü¢Þ¢Û¢ß¢Ú
£¨ÌîÐòºÅ£©£®£¨5£©ÔÚÈÜÒºÅäÖƹý³ÌÖУ¬ÏÂÁвÙ×÷¶ÔÅäÖƽá¹ûûÓÐÓ°ÏìµÄÊÇ
BD
BD
£®A£®¶¨ÈÝʱ¸©ÊÓÈÝÁ¿Æ¿¿Ì¶ÈÏß
B£®ÈÝÁ¿Æ¿ÔÚʹÓÃǰδ¸ÉÔÀïÃæÓÐÉÙÁ¿ÕôÁóË®
C£®ÈÝÁ¿Æ¿ÔÚʹÓÃÇ°¸Õ¸ÕÅäÖÆÍêÒ»¶¨ÎïÖʵÄÁ¿Å¨¶ÈµÄNaClÈÜÒº¶øδϴ¾»
D£®¶¨ÈÝÒ¡ÔȺó·¢ÏÖÒºÃæµÍÓÚÈÝÁ¿Æ¿µÄ¿Ì¶ÈÏߣ¬µ«Î´×öÈκδ¦Àí£®
·ÖÎö£º£¨1£©µç½âÖÊÖ¸ÔÚÈÜÒºÖлòÈÛÈÚ״̬ÏÂÄܵ¼µçµÄ»¯ºÏÎÔÚÈÜÒºÖкÍÈÛÈÚ״̬϶¼²»Äܵ¼µçµÄ»¯ºÏÎïÊôÓڷǵç½âÖÊ£¬³£¼û·Çµç½âÖÊ°üÀ¨£º·Ç½ðÊôÑõ»¯Îï¡¢´ó¶àÊýÓлúÎÈçÒÒ´¼¡¢ÆÏÌÑÌǵȣ©¡¢°±ÆøµÈ£»
£¨2£©K+À´×Ô¸ßÃÌËá¼Ø¡¢ÁòËá¼ØµÄµçÀ룬ÓÉn=
¼ÆËã¸ßÃÌËá¼Ø¡¢ÁòËá¼ØµÄÎïÖʵÄÁ¿£¬¸ù¾Ý¼ØÀë×ÓÊغã¿ÉÖªn£¨K+£©=n£¨KMnO4£©+2n£¨K2SO4£©£¬ÔÙ¸ù¾ÝÎïÖʵÄÁ¿Å¨¶È¶¨Òå¼ÆËã¼ØÀë×ÓÎïÖʵÄÁ¿Å¨¶È£»
£¨3£©¸ù¾ÝÅäÖÆÈÜÒºµÄʵÑé²Ù×÷¹ý³Ì½øÐÐʵÑé²½ÖèÅÅÐò£»
£¨4£©¸ù¾ÝÈÜÒºµÄÅäÖƲ½ÖèÀ´·ÖÎöʹÓõÄÒÇÆ÷£»
£¨5£©·ÖÎö²Ù×÷¶ÔÈÜÖʵÄÎïÖʵÄÁ¿»ò¶ÔÈÜÒºµÄÌå»ýµÄÓ°Ï죬¸ù¾Ýc=
·ÖÎöÅжϣ®
£¨2£©K+À´×Ô¸ßÃÌËá¼Ø¡¢ÁòËá¼ØµÄµçÀ룬ÓÉn=
m |
M |
£¨3£©¸ù¾ÝÅäÖÆÈÜÒºµÄʵÑé²Ù×÷¹ý³Ì½øÐÐʵÑé²½ÖèÅÅÐò£»
£¨4£©¸ù¾ÝÈÜÒºµÄÅäÖƲ½ÖèÀ´·ÖÎöʹÓõÄÒÇÆ÷£»
£¨5£©·ÖÎö²Ù×÷¶ÔÈÜÖʵÄÎïÖʵÄÁ¿»ò¶ÔÈÜÒºµÄÌå»ýµÄÓ°Ï죬¸ù¾Ýc=
n |
V |
½â´ð£º½â£º£¨1£©ÏõËáÒø¡¢ÁòËá¼Ø¡¢¸ßÃÌËá¼ØÊôÓÚÑΣ¬ÔÚÈÜÒºÖпÉÒÔµçÀë³öÀë×Ó£¬Êǵç½âÖÊ£¬ÕáÌÇÈÜÒºÓëÈÛÈÚ״̬϶¼²»µ¼µç£¬ÊǷǵç½âÖÊ£¬¹Ê´ð°¸Îª£ºA£»
£¨2£©¸ßÃÌËá¼ØµÄÎïÖʵÄÁ¿Îªn£¨KMnO4£©=
=0.0016mol£®
ÁòËá¼ØµÄÎïÖʵÄÁ¿Îªn£¨K2SO4£©=
=0.0014mol£¬
n£¨K+£©=n£¨KMnO4£©+2n£¨K2SO4£©=0.0016mol+2¡Á0.0014mol=0.0044mol£¬
ËùÒÔc£¨K+£©=
=0.0088mol/L¡Ö0.009mol/L£¬
¹Ê´ð°¸Îª£º0.009£»
£¨3£©²Ù×÷²½ÖèÓмÆËã¡¢³ÆÁ¿¡¢Èܽ⡢ÒÆÒº¡¢Ï´µÓÒÆÒº¡¢¶¨ÈÝ¡¢Ò¡ÔȵȲÙ×÷£¬Ò»°ãÓÃÍÐÅÌÌìƽ³ÆÁ¿£¬ÓÃÒ©³×È¡ÓÃÒ©Æ·£¬ÔÚÉÕ±ÖÐÈܽ⣨¿ÉÓÃÁ¿Í²Á¿È¡Ë®¼ÓÈëÉÕ±£©£¬²¢Óò£Á§°ô½Á°è£¬¼ÓËÙÈܽ⣮ÀäÈ´ºóתÒƵ½500mLÈÝÁ¿Æ¿ÖУ¬²¢Óò£Á§°ôÒýÁ÷£¬Ï´µÓÉÕ±¡¢²£Á§°ô2-3´Î£¬²¢½«Ï´µÓÒºÒÆÈëÈÝÁ¿Æ¿ÖУ¬¼ÓË®ÖÁÒºÃæ¾àÀë¿Ì¶ÈÏß1¡«2cmʱ£¬¸ÄÓýºÍ·µÎ¹ÜµÎ¼Ó£¬×îºó¶¨Èݵߵ¹Ò¡ÔÈ£¬
ËùÒÔÐèÒÇÆ÷ÓУºÍÐÅÌÌìƽ¡¢ÉÕ±¡¢²£Á§°ô¡¢Ò©³×Íâ¡¢500mLÈÝÁ¿Æ¿¡¢½ºÍ·µÎ¹Ü¡¢Á¿Í²£¨¿ÉÓÿɲ»Ó㩵ȣ¬
¹Ê´ð°¸Îª£º500mLÈÝÁ¿Æ¿£»½ºÍ·µÎ¹Ü£®
£¨4£©²Ù×÷²½ÖèÓмÆËã¡¢³ÆÁ¿¡¢Èܽ⡢ÒÆÒº¡¢Ï´µÓÒÆÒº¡¢¶¨ÈÝ¡¢Ò¡ÔȵȲÙ×÷£¬Ò»°ãÓÃÍÐÅÌÌìƽ³ÆÁ¿£¬ÓÃÒ©³×È¡ÓÃÒ©Æ·£¬ÔÚÉÕ±ÖÐÈܽ⣨¿ÉÓÃÁ¿Í²Á¿È¡Ë®¼ÓÈëÉÕ±£©£¬²¢Óò£Á§°ô½Á°è£¬¼ÓËÙÈܽ⣮ÀäÈ´ºóתÒƵ½500mLÈÝÁ¿Æ¿ÖУ¬²¢Óò£Á§°ôÒýÁ÷£¬Ï´µÓÉÕ±¡¢²£Á§°ô2-3´Î£¬²¢½«Ï´µÓÒºÒÆÈëÈÝÁ¿Æ¿ÖУ¬¼ÓË®ÖÁÒºÃæ¾àÀë¿Ì¶ÈÏß1¡«2cmʱ£¬¸ÄÓýºÍ·µÎ¹ÜµÎ¼Ó£¬×îºó¶¨Èݵߵ¹Ò¡ÔÈ£¬ËùÒÔÕýÈ·µÄ²Ù×÷˳ÐòΪ¢Ý¢Ù¢Ü¢Þ¢Û¢ß¢Ú£¬
¹Ê´ð°¸Îª£º¢Ý¢Ù¢Ü¢Þ¢Û¢ß¢Ú£»
£¨5£©A£®¶¨ÈÝʱ¸©Êӿ̶ÈÏߣ¬ÒºÃæÔڿ̶ÈÏßÏ·½£¬ÈÜÒºÌå»ýƫС£¬ËùÅäÈÜҺŨ¶ÈÆ«¸ß£¬¹ÊA²»·ûºÏ£»
B£®×îºóÐèÒª¶¨ÈÝ£¬ÈÝÁ¿Æ¿²»¸ÉÔº¬ÓÐÉÙÁ¿ÕôÁóË®£¬¶ÔÈÜҺŨ¶ÈÎÞÓ°Ï죬¹ÊB·ûºÏ£»
C£®ÈÝÁ¿Æ¿ÔÚʹÓÃÇ°¸Õ¸ÕÅäÖÆÍêÒ»¶¨ÎïÖʵÄÁ¿Å¨¶ÈµÄKClÈÜÒº¶øδϴ¾»£¬ÈÝÁ¿Æ¿Õ´ÓÐÂÈ»¯ÄÆ£¬ÂÈ»¯ÄƵÄʵ¼ÊÖÊÁ¿Æ«´ó£¬ËùÅäÈÜҺŨ¶ÈÆ«¸ß£¬¹ÊC²»·ûºÏ£»
D£®¶¨ÈÝÒ¡ÔȺó·¢ÏÖÒºÃæµÍÓÚÈÝÁ¿Æ¿µÄ¿Ì¶ÈÏߣ¬Ò»²¿·ÖÈÜÒºÁôÔÚÆ¿ÈûÓëÆ¿¿ÚÖ®¼ä£¬Î´×öÈκδ¦Àí£¬¶ÔËùÅäÈÜҺŨ¶ÈÎÞÓ°Ï죬¹ÊD·ûºÏ£»
¹Ê´ð°¸Îª£ºBD£®
£¨2£©¸ßÃÌËá¼ØµÄÎïÖʵÄÁ¿Îªn£¨KMnO4£©=
0.25g |
158g/mol |
ÁòËá¼ØµÄÎïÖʵÄÁ¿Îªn£¨K2SO4£©=
0.25g |
174g/mol |
n£¨K+£©=n£¨KMnO4£©+2n£¨K2SO4£©=0.0016mol+2¡Á0.0014mol=0.0044mol£¬
ËùÒÔc£¨K+£©=
0.0044mol |
0.5L |
¹Ê´ð°¸Îª£º0.009£»
£¨3£©²Ù×÷²½ÖèÓмÆËã¡¢³ÆÁ¿¡¢Èܽ⡢ÒÆÒº¡¢Ï´µÓÒÆÒº¡¢¶¨ÈÝ¡¢Ò¡ÔȵȲÙ×÷£¬Ò»°ãÓÃÍÐÅÌÌìƽ³ÆÁ¿£¬ÓÃÒ©³×È¡ÓÃÒ©Æ·£¬ÔÚÉÕ±ÖÐÈܽ⣨¿ÉÓÃÁ¿Í²Á¿È¡Ë®¼ÓÈëÉÕ±£©£¬²¢Óò£Á§°ô½Á°è£¬¼ÓËÙÈܽ⣮ÀäÈ´ºóתÒƵ½500mLÈÝÁ¿Æ¿ÖУ¬²¢Óò£Á§°ôÒýÁ÷£¬Ï´µÓÉÕ±¡¢²£Á§°ô2-3´Î£¬²¢½«Ï´µÓÒºÒÆÈëÈÝÁ¿Æ¿ÖУ¬¼ÓË®ÖÁÒºÃæ¾àÀë¿Ì¶ÈÏß1¡«2cmʱ£¬¸ÄÓýºÍ·µÎ¹ÜµÎ¼Ó£¬×îºó¶¨Èݵߵ¹Ò¡ÔÈ£¬
ËùÒÔÐèÒÇÆ÷ÓУºÍÐÅÌÌìƽ¡¢ÉÕ±¡¢²£Á§°ô¡¢Ò©³×Íâ¡¢500mLÈÝÁ¿Æ¿¡¢½ºÍ·µÎ¹Ü¡¢Á¿Í²£¨¿ÉÓÿɲ»Ó㩵ȣ¬
¹Ê´ð°¸Îª£º500mLÈÝÁ¿Æ¿£»½ºÍ·µÎ¹Ü£®
£¨4£©²Ù×÷²½ÖèÓмÆËã¡¢³ÆÁ¿¡¢Èܽ⡢ÒÆÒº¡¢Ï´µÓÒÆÒº¡¢¶¨ÈÝ¡¢Ò¡ÔȵȲÙ×÷£¬Ò»°ãÓÃÍÐÅÌÌìƽ³ÆÁ¿£¬ÓÃÒ©³×È¡ÓÃÒ©Æ·£¬ÔÚÉÕ±ÖÐÈܽ⣨¿ÉÓÃÁ¿Í²Á¿È¡Ë®¼ÓÈëÉÕ±£©£¬²¢Óò£Á§°ô½Á°è£¬¼ÓËÙÈܽ⣮ÀäÈ´ºóתÒƵ½500mLÈÝÁ¿Æ¿ÖУ¬²¢Óò£Á§°ôÒýÁ÷£¬Ï´µÓÉÕ±¡¢²£Á§°ô2-3´Î£¬²¢½«Ï´µÓÒºÒÆÈëÈÝÁ¿Æ¿ÖУ¬¼ÓË®ÖÁÒºÃæ¾àÀë¿Ì¶ÈÏß1¡«2cmʱ£¬¸ÄÓýºÍ·µÎ¹ÜµÎ¼Ó£¬×îºó¶¨Èݵߵ¹Ò¡ÔÈ£¬ËùÒÔÕýÈ·µÄ²Ù×÷˳ÐòΪ¢Ý¢Ù¢Ü¢Þ¢Û¢ß¢Ú£¬
¹Ê´ð°¸Îª£º¢Ý¢Ù¢Ü¢Þ¢Û¢ß¢Ú£»
£¨5£©A£®¶¨ÈÝʱ¸©Êӿ̶ÈÏߣ¬ÒºÃæÔڿ̶ÈÏßÏ·½£¬ÈÜÒºÌå»ýƫС£¬ËùÅäÈÜҺŨ¶ÈÆ«¸ß£¬¹ÊA²»·ûºÏ£»
B£®×îºóÐèÒª¶¨ÈÝ£¬ÈÝÁ¿Æ¿²»¸ÉÔº¬ÓÐÉÙÁ¿ÕôÁóË®£¬¶ÔÈÜҺŨ¶ÈÎÞÓ°Ï죬¹ÊB·ûºÏ£»
C£®ÈÝÁ¿Æ¿ÔÚʹÓÃÇ°¸Õ¸ÕÅäÖÆÍêÒ»¶¨ÎïÖʵÄÁ¿Å¨¶ÈµÄKClÈÜÒº¶øδϴ¾»£¬ÈÝÁ¿Æ¿Õ´ÓÐÂÈ»¯ÄÆ£¬ÂÈ»¯ÄƵÄʵ¼ÊÖÊÁ¿Æ«´ó£¬ËùÅäÈÜҺŨ¶ÈÆ«¸ß£¬¹ÊC²»·ûºÏ£»
D£®¶¨ÈÝÒ¡ÔȺó·¢ÏÖÒºÃæµÍÓÚÈÝÁ¿Æ¿µÄ¿Ì¶ÈÏߣ¬Ò»²¿·ÖÈÜÒºÁôÔÚÆ¿ÈûÓëÆ¿¿ÚÖ®¼ä£¬Î´×öÈκδ¦Àí£¬¶ÔËùÅäÈÜҺŨ¶ÈÎÞÓ°Ï죬¹ÊD·ûºÏ£»
¹Ê´ð°¸Îª£ºBD£®
µãÆÀ£º±¾ÌâÒÔÏÊ»¨±£ÏʼÁΪÔØÌ壬Ö÷Òª¿¼²éÒ»¶¨ÎïÖʵÄÁ¿Å¨¶ÈÈÜÒºÅäÖÆ¡¢ÎïÖʵÄÁ¿Å¨¶ÈµÄ¼ÆË㣬ÄѶÈÖеȣ¬×¢Òâ´Óc=
Àí½âÈÜÒºÅäÖÆÔÀíÓëÎó²î·ÖÎö£®
n |
V |
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿