Question

17£®25¡æʱ£¬´×Ëá¡¢´ÎÂÈËá¡¢ÑÇÏõËáµÄµçÀë³£ÊýÈçÏÂ±í£¬ÏÂÁÐÐðÊö²»ÕýÈ·µÄÊÇ£¨¡¡¡¡£©

Ëá	´×Ëá	´ÎÂÈËá	ÑÇÏõËá
µçÀë³£Êý£¨Ka£©	1.7¡Á10-5	3.0¡Á10-8	7.1¡Á10-4

• A£® PHÏàͬµÄÂÈË®ºÍÑÇÏõËáÈÜÒº£¬Ë®µçÀë³öµÄc£¨H⁺£©Ïàͬ
• B£® ÍùÂÈË®µÎ¼ÓNaOHÈÜÒº³ÊÖÐÐÔ£ºc£¨Na⁺£©=2£¨ClO^-£©+c£¨HClO£©
• C£® Ũ¶ÈÏàµÈµÄCH₃COONaºÍNaNO₂Á½·ÝÈÜÒºÖУ»c£¨CH₃COO£©^-£¾c£¨NO${\;}_{2}^{-}$£©
• D£® ÏòpH=aµÄ´×ËáÈÜÒºÖмÓÒ»¶¨Á¿Ë®£¬ËùµÃÈÜÒºµÄpH£¾a¡¢pH£¼a¡¢pH=a¾ùÓпÉÄÜ

Answer 1

·ÖÎö A¡¢pHÏàͬµÄ²»Í¬ËáÈÜÒºÖУ¬ËáµçÀë³öÀ´µÄÇâÀë×ÓŨ¶ÈÏàͬ£»
B¡¢¾ÝµçºÉÊغãÓÐc£¨Na⁺£©+c£¨H⁺£©=c£¨ClO^-£©+c£¨OH^-£©£¬¾ÝÎïÁÏÊغãÓÐc£¨Cl^- £©=c£¨ClO^-£©+c£¨HClO£©£¬¾Ý´Ë·ÖÎö£»
C¡¢´×ËáµÄËáÐÔ±ÈÑÇÏõËáÈõ£¬¾ÝÔ½ÈõԽˮ½â·ÖÎö£»
D¡¢´×ËáÈÜÒº¼ÓˮϡÊÍʱ£¬ËáÐÔ¼õÈõ£¬pH¼õС£®

½â´ð ½â£ºA¡¢pHÏàͬµÄ²»Í¬ËáÈÜÒºÖУ¬ËáµçÀë³öÀ´µÄÇâÀë×ÓŨ¶ÈÏàͬ£¬¶ÔË®µÄµçÀëµÄÒÖÖƳ̶ÈÏàͬ£¬ËùÒÔË®µçÀë³öµÄc£¨H⁺£©Ïàͬ£¬¹ÊAÕýÈ·£»
B¡¢»ìºÏÈÜÒº³ÊÖÐÐÔ£¬Ôòc£¨H⁺£©=c£¨OH^-£©£¬ÈÜÒºÖдæÔÚµçºÉÊغ㣬ËùÒÔc£¨Na⁺£©+c£¨H⁺£©=c£¨OH^-£©+c£¨ClO^-£©+c£¨Cl^-£©£¬ËùÒÔµÃc£¨Na⁺£©=c£¨ClO^-£©+c£¨Cl^-£©£¬¸ù¾ÝÎïÁÏÊغãµÃc£¨Cl^- £©=c£¨ClO^-£©+c£¨HClO£©£¬ËùÒÔµÃc£¨Na⁺£©=2c£¨ClO^-£©+c£¨HClO£©£¬¹ÊBÕýÈ·£»
C¡¢Å¨¶ÈÏàµÈµÄCH₃COONaºÍNaNO₂Á½·ÝÈÜÒºÖУ¬´×ËáµÄËáÐÔ±ÈÑÇÏõËáÈõ£¬Æä´×Ëá¸ùÀë×ӵĵçÀë³Ì¶È´óÓÚÑÇÏõËá¸ùÀë×Ó£¬ËùÒÔc£¨CH₃COO^-£©£¼c£¨NO₂^-£©£¬¹ÊC´íÎó£»
D¡¢ÏòpH=aµÄ´×ËáÈÜÒºÖмÓÒ»¶¨Á¿Ë®£¬´×ËáµÄµçÀë³Ì¶ÈÔö´ó£¬µ«ÊÇÈÜÒºÖÐÇâÀë×ÓŨ¶È¼õС£¬ÈÜÒºµÄpHÔö´ó£¬¼´pH£¾a£¬¹ÊD´íÎó£»
¹ÊÑ¡CD£®

µãÆÀ ±¾Ì⿼²éÁËÓ°ÏìË®µÄµçÀëµÄÒòËØ¡¢ÈÜÒºÖеĵçºÉÊغãºÍÎïÁÏÊغ㡢ÑÎÀàË®½â¡¢´×Ëá¼ÓˮϡÊÍʱÀë×ÓŨ¶È±ä»¯£¬ÌâÄ¿ÄѶȲ»´ó£®