Question

±È½ÏÏÂÁÐÈÜÒºµÄpH£¨Ìî¡°£¾¡±¡¢¡°£¼¡±¡¢¡°=¡±£©£¨¡¡¡¡£©
£¨1£©25¡æ¡¢1mol/LFeCl₃ÈÜÒº_____80¡æ¡¢1mol/LFeCl₃ÈÜÒº£»
£¨2£©0.1mol/L£¨NH₄£©₂CO₃ÈÜÒº______0.1mol/L Na₂CO₃ÈÜÒº£®
£¨3£©0.1mol/LNH₄ClÈÜÒº______0.01mol/L NH₄ClÈÜÒº£»
£¨4£©0.1mol/LNa₂CO₃ÈÜÒº______0.1mol/L NaHCO₃ÈÜÒº£®

A£®£¾£¼£¼£¾

B£®£¾£¾£¾£¾

C£®£¼£¾£¼£¾

D£®£¼£¼£¾£¾

Answer 1

·ÖÎö£º£¨1£©Éý¸ßζȴٽøº¬ÓÐÈõ¸ùÀë×ÓÑεÄË®½â£»
£¨2£©ï§¸ùÀë×ÓºÍ̼Ëá¸ùÀë×ÓÏ໥´Ù½øË®½â£»
£¨3£©ÏàͬζÈÏ£¬²»Í¬Å¨¶ÈµÄÂÈ»¯ï§ÈÜÒº£¬Å¨¶ÈÔ½´óÆäË®½â³Ì¶ÈԽС£»
£¨4£©Ì¼Ëá¸ùÀë×ӵĵÚÒ»²½Ë®½âÄÜÁ¦´óÓÚµÚ¶þ²½Ë®½âÄÜÁ¦£®

½â´ð£º½â£º£¨1£©ÂÈ»¯ÌúÊÇÇ¿ËáÈõ¼îÑÎÆäÈÜÒº³ÊËáÐÔ£¬ÂÈ»¯ÌúµÄË®½âÊÇÎüÈÈ·´Ó¦£¬Éý¸ßζȴٽøË®½â£¬ÏàͬÌõ¼þÏ£¬Î¶ÈÔ½¸ß£¬ÂÈ»¯ÌúµÄpHԽС£¬ËùÒÔ25¡æ¡¢1mol/LFeCl₃ÈÜÒº£¾80¡æ¡¢1mol/LFeCl₃ÈÜÒº£»
£¨2£©ï§¸ùÀë×ÓºÍ̼Ëá¸ùÀë×ÓÏ໥´Ù½øË®½â£¬ï§¸ùÀë×ÓË®½âʹÈÜÒº³ÊËáÐÔ£¬ÄÆÀë×Ó²»Ë®½â£¬ËùÒÔ0.1mol/L£¨NH₄£©₂CO₃ÈÜÒº¼îÐÔСÓÚ0.1mol/L Na₂CO₃ÈÜÒº£»
£¨3£©ÏàͬÌõ¼þÏ£¬ÂÈ»¯ï§µÄŨ¶ÈÔ½´ó£¬ÆäË®½â³Ì¶ÈԽС£¬µ«Å¨¶ÈÔ½´óµÄÂÈ»¯ï§ÈÜÒºÖÐ笠ùÀë×ÓË®½âµÄŨ¶È´ó£¬ËùÒÔ0.1mol/LNH₄ClÈÜÒºµÄpHСÓÚ0.01mol/L NH₄ClÈÜÒº£»
£¨4£©Ì¼ËáÊǶþÔªÈõËᣬÆäµÚÒ»²½µçÀë³Ì¶ÈÔ¶Ô¶´óÓÚµÚ¶þ²½µçÀë³Ì¶È£¬ËùÒÔ̼Ëá¸ùÀë×ÓµÄË®½â³Ì¶È´óÓÚµÚ¶þ²½Ë®½â³Ì¶È£¬ÏàͬŨ¶ÈµÄ̼ËáÄƺÍ̼ËáÇâÄÆ£¬Ë®½â³Ì¶ÈÔ½´óµÄÆäÈÜÒºµÄpHÔ½´ó£¬ËùÒÔ0.1mol/LNa₂CO₃ÈÜÒº´óÓÚ0.1mol/L NaHCO₃ÈÜÒº£»
¹ÊÑ¡A£®

µãÆÀ£º±¾Ì⿼²éÁËÈÜÒºpH´óСµÄÅжϣ¬Ã÷È·ÑÎÀàË®½âµÄÓ°ÏìÒòËØÊǽⱾÌâ¹Ø¼ü£¬ÖªµÀËáµÄµçÀëƽºâ³£ÊýÓëÆäËá¸ùÀë×ÓË®½â³Ì¶ÈµÄ¹Øϵ£¬ÎªÒ×´íµã£®