Question

ÏÂÁÐÈÜÒºÖÐÓйØ΢Á£µÄÎïÖʵÄÁ¿Å¨¶È¹ØϵÕýÈ·µÄÊÇ£¨¡¡¡¡£©

A£®NaHSO3ºÍNaHCO3µÄ»ìºÏÈÜÒºÖУ¨SºÍC¾ùÓÃR±íʾ£©£ºc£¨Na+£©=c£¨HRO3-£©+2c£¨RO32-£©

B£®³£ÎÂϽ«´×ËáÄÆ¡¢ÑÎËáÁ½ÈÜÒº»ìºÏºó£¬ÈÜÒº³ÊÖÐÐÔ£¬Ôò»ìºÏºóÈÜÒºÖУºc£¨Na+£©£¾c£¨Cl-£©£¾c£¨CH3COOH£©

C£®³£ÎÂÏÂÎïÖʵÄÁ¿Å¨¶ÈÏàµÈµÄ¢ÙNH4HCO3¡¢¢Ú£¨NH4£©2SO4¡¢¢ÛNH4HSO4ÈýÖÖÈÜÒºÖÐc£¨NH4+£©£º¢Ú£¾¢Û£¾¢Ù

D£®ÏàͬÌõ¼þÏ£¬pH=5µÄ¢ÙNH4ClÈÜÒº¡¢¢ÚCH3COOHÈÜÒº¡¢¢ÛÏ¡ÑÎËáÈÜÒºÖÐÓÉË®µçÀë³öµÄc£¨H+£©£º¢Ù£¾¢Ú£¾¢Û

Answer 1

A¡¢Ê×ÏÈÊéд¸ÃÈÜÒºµÄµçºÉÊغãʽ£ºc£¨Na⁺£©+c£¨H⁺£©=c£¨HRO₃^-£©+2c£¨RO₃^2-£©+c£¨OH^-£©£¬ÒªÊ¹µÃ½áÂÛ³ÉÁ¢£¬ÔòÐè
c£¨H⁺£©=c£¨OH^-£©£¬¹ÊA´íÎó£»
B¡¢´×ËáÄƺÍÑÎËá·´Ó¦Éú³ÉÂÈ»¯Äƺʹ×ËᣬÈÜÒº³ÊÖÐÐÔ£¬Ôò»ìºÏºóÈÜÒºÖеĴ×ËáÄÆÊ£Ó࣬¼´ÈÜÒ¹ÊÇÂÈ»¯ÄÆ¡¢´×ËáÒÔ¼°´×ËáÄƵĻìºÏÎ¸ù¾ÝÀë×ÓµÄÀ´Ô´£¬ÄÆÀë×ÓÊÇÍêÈ«µçÀë³öµÄÀë×Ó£¬Å¨¶È×î´ó£¬Æä´Î´×ËáÊÇÁ½ÖÖÀ´Ô´£¬Ò»ÖÖÊÇ´×ËáÄƵÄÖ±½ÓµçÀ룬һÖÖÊÇÀ´×Ô´×Ëá¸ùµÄË®½â£¬µ«ÊÇÂÈÀë×ÓÖ»À´×ÔÂÈ»¯ÄƵĵçÀ룬ËùÒÔc£¨Na⁺£©£¾c£¨CH₃COOH£©£¾c£¨Cl^-£©£¬¹ÊB´íÎó£»
C¡¢Ì¼ËáÇâï§ÖУ¬Ì¼ËáÇâ¸ù¶Ô笠ùÀë×ÓµÄË®½âÆðµ½´Ù½ø×÷Óã¬ÁòËá¸ùÀë×Ó²»Ó°Ïì笠ùÀë×ÓµÄË®½â£¬ÁòËáÇâï§ÖУ¬ÇâÀë×Ó¶Ô笠ùÀë×ÓµÄË®½âÆðµ½ÒÖÖÆ×÷Óã¬ËùÒÔÈýÖÖÈÜÒºÖУ¬ï§¸ùÀë×ÓµÄŨ¶È´óС˳ÐòÊÇ£º¢Ú£¾¢Û£¾¢Ù£¬¹ÊCÕýÈ·£»
D¡¢pH=5µÄNH₄ClÈÜÒºÖУ¬Ë®µçÀë³öµÄc£¨H⁺£©=10^-5mol/L£¬pH=5µÄCH₃COOHÈÜÒºÖУ¬Ë®µçÀë³öµÄc£¨H⁺£©=10^-9mol/L£¬pH=5µÄÏ¡ÑÎËáÈÜÒºÖÐÓÉË®µçÀë³öµÄc£¨H⁺£©=10^-9mol/L£¬ËùÒÔ¢Ù£¾¢Û=¢Ú£¬¹ÊD´íÎó£®
¹ÊÑ¡C£®