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ÈçºÎÅäÖÃ0.1MµÄBorate buffer(PH=8.XX)
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×î½üÒª×ö¸ß·Ö×ӺϳÉÉÏÒ»¸ö°·»ùËá ÐèÒª´ËÈÜÒº ÒÔÏÂÊÇÎÒµÄÏë·¨ µ«²»ÖªºÎÕß²ÅÊÇÕýÈ·µÄ (ʵ¼ÊÅäÖÃʱ ÎÒÓ¦¸Ã»á±ÈÀý¼õÁ¿ ²»È»Ë®ÏûºÄÌ«´ó ûÄÇô´óµÄÈÝÆ÷) ÎÊÌâÒ»: ÅäÖÃ0.1MµÄÅðËáÄÆ»º³åÈÜÒº PH=8.XX ²ÄÁÏ:NaOH(MW=40) H3BO3(MW=61.8) ddH2O ·¨Ò» : È¡20 g(0.5mol) NaOHºÍ 120 g(1.94mol) H3BO3 È»ºóÓüÓddH2Oµ½14.4L ÒòΪÅðËáÏûºÄÁË0.5mol ֻʣÏÂ1.44mol ·¨¶þ È¡20 g(0.5mol) NaOHºÍ 120 g(1.94mol) H3BO3 È»ºóÓüÓddH2Oµ½19.4L ²»¿¼ÂÇÅðËáµÄÏûºÄ Ö±½ÓÅäÖÃ0.1MµÄÅðËá È»ºó¼ÓÈëNaOH ·¨Èý È¡20 g(0.5mol) NaOHºÍ 120 g(1.94mol) H3BO3 È»ºóÓüÓddH2Oµ½ 1L È»ºóÈ¡Æä20ml ÔÙ¼ÓË®µ½ 1L ÅäÖÃ0.1MµÄÅðËáÄÆ»º³åÈÜÒº ÆäʵÊÇÖ¸0.1M µÄ Åðɰ(NaOHºÍH3BO3ËùÉú³ÉµÄ) ÎÊÌâ¶þ: Èç¹ûÒª¸ÄÓà H3BO3(ÅðËá)ºÍNa2B4O7¡¤10H2O (Åðɰ)ºÍNaOH ÊÇ·ñ»á±È½ÏÈÝÒ×ÅäÖÃ0.1MµÄÅðËáÄÆ»º³åÈÜÒº PH=8.0³õÍ· ÒòΪÎÒÏë˵NaOHºÍH3BO3»ìºÏ ¾Í»á²úÉúÅðɰÁË ËùÒÔ¿ÉÒÔ²»ÐèÒªÅðɰ [ Last edited by mquare on 2011-11-11 at 01:40 ] |
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