Question

15£®ÏÂÁÐÈÜÒºÖÐÎïÖʵÄÁ¿Å¨¶È¹ØϵÕýÈ·µÄÊÇ£¨¡¡¡¡£©

• A£® ÊÒΣ¬0.1mol•L^-1µÄCH₃COOHÈÜÒºÖУºc£¨CH₃COOH£©£¼c£¨CH₃COO^-£©
• B£® 1L 0.1mol•L^-1µÄ£¨NH₄£©₂Fe£¨SO₄£©₂ÈÜÒºÖУºc£¨SO${\;}_{4}^{2-}$£©£¾c£¨NH${\;}_{4}^{+}$£©£¾c£¨Fe²⁺£©£¾c£¨H⁺£©£¾c£¨OH^-£©
• C£® ÊÒΣ¬0.1mol•L^-1µÄCH₃COONa¡¢NaOHºÍNa₂CO₃ÈýÖÖÈÜÒº£¬pH´óСµÄ˳ÐòΪ£ºNaOH£¼CH₃COONa£¼Na₂CO₃
• D£® Ïò0.01mol•L^-1µÄNaHSO₄ÈÜÒºÖеμÓNaOHÈÜÒºÖÁÖÐÐÔʱ£ºc£¨SO${\;}_{4}^{2-}$£©£¾c£¨Na⁺£©£¾c£¨OH^-£©=c£¨H⁺£©

Answer 1

·ÖÎö A¡¢Èõµç½âÖʵĵçÀëÊǼ«Æä΢ÈõµÄ£»
B¡¢£¨NH₄£©₂Fe£¨SO₄£©₂ÈÜÒºÖжþԪǿÀë×ÓµÄŨ¶È£¾¶þԪˮ½âµÄŨ¶È£¾Ò»ÔªÇ¿Àë×ÓµÄŨ¶È£¾Ò»ÔªË®½âµÄÀë×ÓµÄŨ¶È£¾ÏÔÐÔÀë×Ó£¾ÒþÐÔÀë×Ó£»
C¡¢¼îÈÜÒºpH×î´ó£¬ÑÎÈÜÒºÖУ¬Ëá¸ùÀë×ÓË®½â³Ì¶ÈÔ½´ó£¬ÆäÏàͬŨ¶ÈµÄÄÆÑÎÈÜÒºpHÔ½´ó£»
D¡¢ÈÜÒº³ÊÖÐÐÔ£¬Á½ÕßµÄÎïÖʵÄÁ¿ÏàµÈ£¬ËùÒÔc£¨Na⁺£©£¾c£¨SO₄^2-£©£¾c£¨OH^-£©=c£¨H⁺£©£®

½â´ð ½â£ºA¡¢Èõµç½âÖʵĵçÀëÊǼ«Æä΢ÈõµÄ£¬ËùÒÔ0.1mol•L^-1µÄCH₃COOHÈÜÒºÖУºc£¨CH₃COOH£©£¾c£¨CH₃COO^-£©£¬¹ÊA´íÎó£»
B¡¢£¨NH₄£©₂Fe£¨SO₄£©₂ÈÜÒºÀë×ÓŨ¶È´óСµÄ˳ÐòΪ£ºc£¨SO₄^2-£©£¾c£¨NH₄⁺£©£¾c£¨Fe²⁺£©£¾c£¨H⁺£©£¾c£¨OH^-£©£¬¹ÊBÕýÈ·£»
C¡¢¼îÈÜÒºpH×î´ó£¬ÑÎÈÜÒºÖУ¬Ëá¸ùÀë×ÓË®½â³Ì¶ÈÔ½´ó£¬ÆäÏàͬŨ¶ÈµÄÄÆÑÎÈÜÒºpHÔ½´ó£¬´×Ëá¸ùÀë×ÓË®½â³Ì¶ÈСÓÚ̼Ëá¸ùÀë×Ó£¬ËùÒÔÕâÈýÖÖÈÜÒºpH´óС˳ÐòÊÇ£ºCH₃COONa£¼Na₂CO₃£¼NaOH£¬¹ÊC´íÎó£»
D¡¢ÈÜÒº³ÊÖÐÐÔ£¬Á½ÕßµÄÎïÖʵÄÁ¿ÏàµÈ£¬ËùÒÔc£¨Na⁺£©£¾c£¨SO₄^2-£©£¾c£¨OH^-£©=c£¨H⁺£©£¬¹ÊD´íÎó£»
¹ÊÑ¡B£®

µãÆÀ ±¾Ì⿼²éÁËpH´óСµÄÅжϺÍÀë×ÓŨ¶È´óСµÄ±È½Ï£¬ÌâÄ¿ÄѶȲ»´ó£¬Ïȸù¾ÝÈÜÒºµÄËá¼îÑδóÌå·ÖÀ࣬ÔÙ¸ù¾ÝÈõÀë×ÓµÄË®½âŨ¶ÈÅжÏpH´óС£¬ÎªÒ×´íµã£®