ÌâÄ¿ÄÚÈÝ
£¨16·Ö£©Öп¼»¯Ñ§ÊµÑ鿼²éÊÇÓÉѧÉú³éÇ©È·¶¨Ò»¸öʵÑé½øÐп¼²é£¬¿¼²éµÄʵÑéÓУº¢ÙÑõÆøµÄÖÆÈ¡ºÍÐÔÖÊ£»¢Ú¶þÑõ»¯Ì¼µÄÖÆÈ¡ºÍÐÔÖÊ£»¢ÛÅäÖÆ50g15%µÄNaClÈÜÒº¡¡µÈ°Ë¸ö»ù´¡ÊµÑé¡£
£¨1£©¼×ͬѧ³éÇ©ºóÀ´µ½ÊµÑéÊÒ£¬·¢³ö±¾×éʵÑé×ÀÉϵÄÖ÷Ҫ׼±¸ÁËÏÂÁÐÒÇÆ÷ºÍÒ©Æ·£º
¢Ù¼×ͬѧ³éµ½µÄʵÑéÓ¦¸ÃÊÇ £¨Ìî×Öĸ´úºÅ£©¡£
A£®ÑõÆøµÄÖÆÈ¡ºÍÐÔÖÊ B£®¶þÑõ»¯Ì¼µÄÖÆÈ¡ºÍÐÔÖÊ
¢Ú¸ÃʵÑé²»±ØÓõ½µÄÒÇÆ÷ÊÇ £¨Ð´ÒÇÆ÷Ãû³Æ£©¡£ÖÆÈ¡¸ÃÆøÌåµÄ»¯Ñ§·½³ÌʽΪ£º ¡£
¢Û¼×ͬѧȡÓùÌÌåÒ©Æ··ÅÈë·´Ó¦ÈÝÆ÷ÖеIJÙ×÷ÊÇ ¡£
¢ÜÀûÓÃÉÏÊöÆøÌå·¢Éú×°Öû¹¿ÉÒÔÖÆÈ¡ ÆøÌ壬Óà £¨Ñ¡Ìî¡°ÏòÉÏ¡±»ò¡°ÏòÏ¡±£©ÅÅ¿ÕÆø·¨ÊÕ¼¯¸ÃÆøÌå¡£
£¨2£©ÒÒͬѧ³éµ½¡°ÅäÖÆ50g15%%µÄNaClÈÜÒº¡±µÄʵÑ顣ͨ¹ý¼ÆË㣬ËûÐèÒª³ÆÁ¿NaCl
g£¬Á¿È¡Ë® mL¡£Á¿È¡Ë®Ê±£¬µ±¼ÓÈëÁ¿Í²µÄË®½Ó½üËùÐèµÄÌå»ýʱ£¬Ó¦½øÐÐÏÂÒ»²½²Ù×÷ÊÇ ¡£
£¨1£©¼×ͬѧ³éÇ©ºóÀ´µ½ÊµÑéÊÒ£¬·¢³ö±¾×éʵÑé×ÀÉϵÄÖ÷Ҫ׼±¸ÁËÏÂÁÐÒÇÆ÷ºÍÒ©Æ·£º
¢Ù¼×ͬѧ³éµ½µÄʵÑéÓ¦¸ÃÊÇ £¨Ìî×Öĸ´úºÅ£©¡£
A£®ÑõÆøµÄÖÆÈ¡ºÍÐÔÖÊ B£®¶þÑõ»¯Ì¼µÄÖÆÈ¡ºÍÐÔÖÊ
¢Ú¸ÃʵÑé²»±ØÓõ½µÄÒÇÆ÷ÊÇ £¨Ð´ÒÇÆ÷Ãû³Æ£©¡£ÖÆÈ¡¸ÃÆøÌåµÄ»¯Ñ§·½³ÌʽΪ£º ¡£
¢Û¼×ͬѧȡÓùÌÌåÒ©Æ··ÅÈë·´Ó¦ÈÝÆ÷ÖеIJÙ×÷ÊÇ ¡£
¢ÜÀûÓÃÉÏÊöÆøÌå·¢Éú×°Öû¹¿ÉÒÔÖÆÈ¡ ÆøÌ壬Óà £¨Ñ¡Ìî¡°ÏòÉÏ¡±»ò¡°ÏòÏ¡±£©ÅÅ¿ÕÆø·¨ÊÕ¼¯¸ÃÆøÌå¡£
£¨2£©ÒÒͬѧ³éµ½¡°ÅäÖÆ50g15%%µÄNaClÈÜÒº¡±µÄʵÑ顣ͨ¹ý¼ÆË㣬ËûÐèÒª³ÆÁ¿NaCl
g£¬Á¿È¡Ë® mL¡£Á¿È¡Ë®Ê±£¬µ±¼ÓÈëÁ¿Í²µÄË®½Ó½üËùÐèµÄÌå»ýʱ£¬Ó¦½øÐÐÏÂÒ»²½²Ù×÷ÊÇ ¡£
£¨1£©¢ÙA ¢Ú¾Æ¾«µÆ 2H2O2 MnO2 2H2O + O2¡ü ¢ÛÏÈ°Ñ׶ÐÎÆ¿ºá·Å£¬ÓÃÊ¢ÓжþÑõ»¯Ã̵ÄÒ©³×£¨»òÖ½²Û£©Ð¡ÐĵØË͵½×¶ÐÎÆ¿µ×²¿£¬È»ºóʹ׶ÐÎÆ¿Ö±Á¢ÆðÀ´¢ÜCO2 ÏòÉÏ£¨2£©7.5 42.5 ¸ÄÓýºÍ·µÎ¹ÜÖðµÎ¼ÓË®ÖÁËùÐè¿Ì¶È£¨»òÖÁ42.5mL£©
ÊÔÌâ·ÖÎö£º£¨1£©¢ÙʵÑé×ÀÉϵÄҩƷΪ¹ýÑõ»¯ÇâºÍ¶þÑõ»¯ÃÌ£¬ËùÒÔӦΪÑõÆøµÄÖÆÈ¡ºÍÊÕ¼¯¡£
¢ÚÓùýÑõ»¯ÇâºÍ¶þÑõ»¯ÃÌÖÆÈ¡ÑõÆøʱÊÇÔÚ³£ÎÂϽøÐеģ¬ËùÒÔ²»ÐèÒª¾Æ¾«µÆ¡£·´Ó¦µÄ»¯Ñ§·½³ÌʽΪ£º2H2O2MnO22H2O + O2¡ü
¢Û±¾ÊµÑéÓõ½µÄ¹ÌÌåҩƷΪ¶þÑõ»¯ÃÌ£¬±¾ÊµÑéµÄ·´Ó¦ÈÝÆ÷Ϊ׶ÐÎÆ¿¡£ËùÒÔ¼ÓÈëµÄ·½·¨Îª£ºÏÈ°Ñ׶ÐÎÆ¿ºá·Å£¬ÓÃÊ¢ÓжþÑõ»¯Ã̵ÄÒ©³×£¨»òÖ½²Û£©Ð¡ÐĵØË͵½×¶ÐÎÆ¿µ×²¿£¬È»ºóʹ׶ÐÎÆ¿Ö±Á¢ÆðÀ´
¢Ü±¾×°ÖÃΪ¹ÌÌåºÍÒºÌåÔÚ³£ÎÂÏÂÖÆÈ¡ÆøÌåµÄ×°Öã¬ËùÒÔ»¹¿ÉÒÔÓÃʯ»ÒʯÓëÏ¡ÑÎËá·´Ó¦ÖÆÈ¡¶þÑõ»¯Ì¼ÆøÌå¡£¶þÑõ»¯Ì¼µÄÃܶȱȿÕÆø´ó£¬ËùÒÔ¿ÉÒÔÓÃÏòÉÏÅÅ¿ÕÆø·¨ÊÕ¼¯¡£
£¨2£©¸ù¾ÝÌâÒâ¿ÉÖª£¬ÐèÒªµÄÂÈ»¯ÄƵÄÖÊÁ¿Îª50g¡Á15%=7.5g£»ÐèÒªµÄË®µÄÖÊÁ¿Îª50g-7.5g="42.5g" ËùÒÔÐèҪˮµÄÌå»ýΪ£º42.5g¡Â1g/ml=42.5ml
µ±¼ÓÈëµÄË®µÄÌå»ý½Ó½üÖ¸¶¨¿Ì¶Èʱ£¬Òª¸ÄÓýºÍ·µÎ¹ÜÖðµÎ¼ÓË®ÖÁËùÐè¿Ì¶È¡£
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿