ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿¶ÔÀûÓü×ÍéÏû³ýNO2ÎÛȾ½øÐÐÑо¿£¬CH4+2NO2N2+CO2+2H2O¡£ÔÚ1LÃܱÕÈÝÆ÷ÖУ¬¿ØÖƲ»Í¬Î¶ȣ¬·Ö±ð¼ÓÈë0.50molCH4ºÍ1.2molNO2£¬²âµÃn(CH4)Ëæʱ¼ä±ä»¯µÄÓйØʵÑéÊý¾Ý¼ûÏÂ±í¡£
×é±ð | ÎÂ¶È | ʱ¼ä/min n/mol | 0 | 10 | 20 | 40 | 50 |
¢Ù | T1 | n(CH4) | 0.50 | 0.35 | 0.25 | 0.10 | 0.10 |
¢Ú | T2 | n(CH4) | 0.50 | 0.30 | 0.18 | 0.15 |
ÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ£¨ £©
A. ÓÉʵÑéÊý¾Ý¿É֪ʵÑé¿ØÖƵÄζÈT2>T1
B. ×é±ð¢ÙÖУ¬0~20minÄÚ£¬NO2µÄ½µ½âËÙÂÊΪ0.0125mol¡¤L-1¡¤min-1
C. 40minʱ£¬±í¸ñÖÐT2¶ÔÓ¦µÄÊý¾ÝΪ0.18
D. 0¡«10minÄÚ£¬CH4µÄ½µ½âËÙÂÊ¢Ù>¢Ú
¡¾´ð°¸¡¿A
¡¾½âÎö¡¿A. ÓÉʵÑéÊý¾Ý¿ÉÖª£¬ÔÚÇ°10minÄÚ£¬ÔÚT2ζÈÏ£¬¼×ÍéµÄ±ä»¯Á¿½Ï´ó£¬ËùÒÔÔÚ¸ÃζÈÏ»¯Ñ§·´Ó¦ËÙÂʽϿ죬Òò´Ë£¬ÊµÑé¿ØÖƵÄζÈT2>T1£¬AÕýÈ·£»B. ×é±ð¢ÙÖУ¬0~20minÄÚ£¬¼×ÍéµÄ±ä»¯Á¿Îª0.25mol£¬ÔòNO2µÄ±ä»¯Á¿Îª0.50mol£¬ËùÒÔÆä½µ½âËÙÂÊΪ0.025mol¡¤L-1¡¤min-1£¬B²»ÕýÈ·£»C. ÓɱíÖÐÊý¾Ý¿ÉÖª£¬40minʱ£¬ÊµÑé¢ÙµÄ·´Ó¦ÒÑ´ïƽºâ״̬£¬ÔòÔÚζȽϸߡ¢·´Ó¦ËÙÂʽϿìµÄʵÑé¢ÚÖУ¬·´Ó¦Ò»¶¨´ïµ½Æ½ºâ״̬£¬ËùÒÔ±í¸ñÖÐT2¶ÔÓ¦µÄÊý¾ÝΪ0.15£¬C²»ÕýÈ·£»D.ÓÉAµÄ·ÖÎö¿ÉÖª£¬ 0¡«10minÄÚ£¬CH4µÄ½µ½âËÙÂÊ¢Ù<¢Ú£¬D²»ÕýÈ·¡£±¾ÌâÑ¡A¡£
¡¾ÌâÄ¿¡¿Ï±íÊÇ25 ¡æʱijЩÈõËáµÄµçÀëƽºâ³£Êý¡£
»¯Ñ§Ê½ | CH3COOH | HClO | H2CO3 | H2C2O4 |
Ka | Ka£½1.8¡Á10£5 | Ka£½3.0¡Á10£8 | Ka1£½4.1¡Á10£7 | Ka1£½5.9¡Á10£2 |
£¨1£©H2C2O4Ó뺬µÈÎïÖʵÄÁ¿µÄKOHµÄÈÜÒº·´Ó¦ºóËùµÃÈÜÒº³ÊËáÐÔ£¬¸ÃÈÜÒºÖи÷Àë×ÓŨ¶ÈÓÉ´óµ½Ð¡µÄ˳ÐòΪ¡£
£¨2£©Ïò0.1 mol¡¤L£1 CH3COOHÈÜÒºÖеμÓNaOHÈÜÒºÖÁc£¨CH3COOH£©¡Ãc£¨CH3COO££©£½5¡Ã9£¬´ËʱÈÜÒºpH£½¡£
£¨3£©Ïò̼ËáÄÆÈÜÒºÖеμÓÉÙÁ¿ÂÈË®µÄÀë×Ó·½³ÌʽΪ¡£
£¨4£©Èô0.1mol¡¤L£1CH3COOHÈÜÒºÓë0.1mol¡¤L£1NaOHÈÜÒºµÈÌå»ý»ìºÏ£¨ºöÂÔ»ìºÏºóÈÜÒºÌå»ýµÄ±ä»¯£©£¬²âµÃ»ìºÏÈÜÒºµÄpH£½8£¬Ôòc£¨Na+£©-c£¨CH3COO££©=mol¡¤L£1£¨Ìȷ¼ÆËã½á¹û£©¡£
£¨5£©½«CH3COOHÈÜÒºÓë´óÀíʯ·´Ó¦Ëù²úÉúµÄ±ê¿öÏÂ44.8LÆøÌåÈ«²¿Í¨Èëµ½2L 1.5mol/LµÄNaOHÈÜÒºÖгä·Ö·´Ó¦£¬ÔòÈÜÒºÖÐËùÓÐÀë×ÓµÄÎïÖʵÄÁ¿Å¨¶ÈÓÉ´óµ½Ð¡µÄ˳ÐòΪ¡£