ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿ÊµÑé´´ÐÂÊÇÖÐѧÉú×îΪÖØÒªµÄ¿ÆѧËØÑø¡£ÒÔÏÂÊÇijѧУʦÉú¶Ô¡°MnO2´ß»¯H2O2ÈÜÒº·Ö½âʵÑé×°ÖõĴ´ÐÂÉè¼Æ¡±£¬×°ÖÃÈçͼ¡£ÊµÑé¹ý³ÌÈçÏÂ:¢Ù½«ÊµÑéÊÒ³£ÓÃÒÇÆ÷ÇòÐθÉÔï¹Üˮƽ·ÅÖã¬ÓõιÜÎüÈ¡3 mL(ÃܶÈΪ1 g/mL)Ũ¶ÈΪ5%µÄH2O2ÈÜÒº¼ÓÈë¸ÉÔï¹ÜµÄÇòÅÝÄÚ£¬ÔÙÓÃÒ©³×È¡02 g MnO2·ÛÄ©£¬¼ÓÔÚ¸ÉÔï¹ÜµÄ½øÆø¹ÜµÄ¹Ü±ÚÉÏ¡£¢ÚµãȼÏð½ºÈûÉÏ°ôÏãºó£¬Èû½ô¸ÉÔï¹Ü²¢½«ÆäÊúÁ¢¡£¶Ô¸Ã´´ÐÂʵÑéµÄÆÀ¼Û£¬ÄãÈÏΪºÏÀíµÄÊÇ( )
A.ʵÑéʹÓõÄÒ©Æ·ÓÃÁ¿Ì«´ó
B.ʵÑé¹ý³ÌÖй۲쵽°ôÏ㸴ȼ£¬Õû¸ö×°ÖúÃËƵãȼµÄµÆËþ£¬È¤Î¶ÐÔÇ¿
C.·´Ó¦ËÙÂÊÌ«Âý£¬µ¢Îóʱ¼ä
D.ʵÑéÖÐËùÓõÄÒÇÆ÷¡¢²ÄÁϼ°Ò©Æ·¾ùÄѵõ½
¡¾´ð°¸¡¿B
¡¾½âÎö¡¿
ÆÀ¼ÛҪʵÊÂÇóÊÇ£¬¸ÃʵÑéʹÓõÄÒ©Æ·ÓÃÁ¿²»´ó£»·´Ó¦ËٶȽϿ죬ʵÑéÖÐËùÓõÄÒÇÆ÷¡¢²ÄÁϼ°Ò©Æ·¾ùÒ׵õ½£¬ÊµÑé¹ý³ÌÖй۲쵽°ôÏ㸴ȼ£¬Õû¸ö×°ÖúÃËƵãȼµÄµÆËþ£¬È¤Î¶ÐÔÇ¿¡£¹ÊÑ¡B ¡£
![](http://thumb2018.1010pic.com/images/loading.gif)
¡¾ÌâÄ¿¡¿Ï±íÊÇNaOHºÍCa(OH)2µÄÈܽâ¶ÈÊý¾Ý£¬Çë»Ø´ðÏÂÁÐÎÊÌ⣮
ζȣ¨¡æ£© | 0 | 20 | 40 | 60 | 80 | 100 | |
Èܽâ¶È£¨g£© | NaOH | 31 | 91 | 111 | 129 | 313 | 336 |
Ca(OH)2 | 0.19 | 0.17 | 0.14 | 0.12 | 0.09 | 0.08 |
£¨1£©´Ó±íÖÐÊý¾Ý¿ÉÒÔ»ñµÃµÄÐÅÏ¢ÊÇ__________£¨Ð´Ò»Ìõ£©£®
£¨2£©°Ñ80¡æʱNaOHµÄ±¥ºÍÈÜÒº½µÎÂÖÁ20¡æ£¬¿ÉÒÔ¿´µ½µÄÏÖÏóÊÇ__________£¬´ËʱÈÜÒºµÄÈÜÖÊÖÊÁ¿·ÖÊýΪ__________£®£¨±£ÁôһλСÊý£©
£¨3£©Ä³ÐËȤС×é¶Ô²¿·Ö±äÖʵÄÇâÑõ»¯ÄƹÌÌå½øÐÐÌá´¿£¬Éè¼ÆÁËÈçϲÙ×÷Á÷³Ì£ºÇë»Ø´ð£º
£¨¢ñ£©²½Öè¢ÚÖмÓÈë¹ýÁ¿Ca(OH)2µÄÄ¿µÄÊÇ__________£»Éæ¼°·´Ó¦µÄ»¯Ñ§·½³ÌʽΪ__________£®
£¨¢ò£©ÂËÒºBÖеÄÈÜÖÊÊÇ__________£¨Ð´»¯Ñ§Ê½£©£»²½Öè¢ÛËù°üº¬µÄ¾ßÌå²Ù×÷ÊǼÓÈÈŨËõ¡¢__________¡¢¹ýÂË£®
£¨¢ó£©ÈôʵÑéÇ°³ÆµÃÑùÆ·µÄÖÊÁ¿Îª10g£¬ÊµÑéºó³ÆµÃ¡°ÂËÔüA¡±ºÍ¡°NaOH¹ÌÌ塱µÄÖÊÁ¿·Ö±ðÊÇ5gºÍ8.7g£¬Ôò´ËÑùÆ·µÄ´¿¶ÈΪ__________£®
¡¾ÌâÄ¿¡¿Ä³Ð£»¯Ñ§ÐËȤС×éÀûÓÃÏÂÁÐÒÇÆ÷ÔÚʵÑéÊÒ½øÐÐÖÆÈ¡O2µÄÏà¹ØʵÑé̽¾¿£¬Çë»Ø´ðÏÂÁÐÎÊÌ⣮
£¨1£©¼×С×éÓÃMnO2¡¢KClO3Á½ÖÖÒ©Æ·ÖÆÈ¡¸ÉÔïµÄO2£¬ÐèÑ¡ÓõÄÒÇÆ÷×éºÏÊÇ________£¬·´Ó¦½áÊøºó»ØÊÕMnO2¹ÌÌ壬²Ù×÷ÒÀ´ÎÊÇÀäÈ´ÖÁÊÒΡ¢________¡¢¹ýÂË¡¢________¡¢ºæ¸É£®
£¨2£©ÒÒС×é̽¾¿Fe2O3ÄÜ·ñ×÷ΪH2O2·Ö½âµÄ´ß»¯¼Á£®ÊµÑéʱ¼äΪ30s£¨H2O2¹ýÁ¿£©£¬ÆäËû¿ÉÄÜÓ°ÏìʵÑéµÄÒòËؾù±£³Ö²»±ä£¬Ïà¹ØÊý¾ÝÈçÏ£º
ʵÑéÐòºÅ | 10%µÄH2O2ÈÜÒº£¨mL£© | ÈÜÒºÖмÓÈëÎïÖÊ£¨g£© | ÊÕ¼¯µ½ÆøÌåµÄ Ìå»ý£¨mL£© |
1 | 100 | ÎÞ | a |
2 | 100 | Fe2O30.5g | b |
3 | 100 | MnO20.5g | c |
ͨ¹ý±È½ÏºÍ______£¨Ìî¡°a¡±¡°b¡±¡°c¡±£©µÄ´óС£¬¿ÉÖ¤Ã÷Fe2O3ÔÚʵÑéÖÐÆð´ß»¯×÷Óã¬Ð´³ö¸Ã·´Ó¦µÄ»¯Ñ§·½³Ìʽ________£®Æä´ÎÐè²¹×öʵÑ飬ÑéÖ¤·´Ó¦Ç°ºóFe2O3µÄ»¯Ñ§ÐÔÖʲ»±äºÍÑéÖ¤________£®
£¨3£©±ûС×é̽¾¿MnO2µÄÓÃÁ¿¶ÔH2O2·Ö½âËÙÂʵÄÓ°Ï죮ÿ´Î¾ùÓÃ30mL10%µÄH2O2ÈÜÒº£¬Ê¹Óò»Í¬ÖÊÁ¿µÄMnO2×÷´ß»¯¼Á£¬²â¶¨Ã¿´ÎÊÕ¼¯µ½500mL O2ËùÓõÄʱ¼ä£®½á¹ûÈçͼ£¨ÆäËûʵÑéÌõ¼þÏàͬ£©£º
ÓÉͼ¿ÉÖª£¬MnO2µÄÓÃÁ¿¶ÔH2O2·Ö½âËÙÂÊÓ°ÏìµÄ¹æÂÉÊÇ¢Ù________£» ¢ÚMnO2µÄÓÃÁ¿³¬³öÒ»¶¨·¶Î§ºó£¬ÆäÓÃÁ¿ÔÙÔö´ó£¬·´Ó¦ËÙÂʲ»ÔÙ¼ÌÐø¼Ó¿ì£®