Question

14£®ÒÑ֪̼ËáÇâ¼ØÈÜÒºÏÔ¼îÐÔ£¬25¡æʱÏò10mL0.01mol/LKHCO3ÈÜÒºÖеμÓ0.01mol/LKOHÈÜÒº£¬Ëæ×ÅKOHÈÜÒºÌå»ýµÄÔö¼Ó£¬ÈÜÒºÖÐ΢Á£Å¨¶È¹ØϵÕýÈ·µÄÊÇ£¨¡¡¡¡£©

• A£® V£¨KOH£©=0ʱ£¬ÈÜÒºÖÐc£¨K⁺£©=c£¨HCO₃^-£©+c£¨H₂CO₃£©
• B£® V£¨KOH£©=10mLʱ£¬ÈÜÒºÖÐc£¨HCO₃^-£©£¾c£¨H₂CO₃£©
• C£® V£¨KOH£©=20mLʱ£¬ÈÜÒºÖÐc£¨K⁺£©£¾c£¨CO₃^2-£©£¾c£¨OH^-£©£¾c£¨H⁺£©
• D£® ¶ÔV£¨KOH£©=10mLʱµÄÈÜÒºÉýΣ¬ÈÜÒºÖУºc£¨K⁺£©£¾c£¨OH^-£©£¾c£¨CO₃^2-£©£¾c£¨H⁺£©

Answer 1

·ÖÎö A£®V£¨KOH£©=0ʱΪ̼ËáÇâ¼ØÈÜÒº£¬¸ù¾Ý̼ËáÇâ¼ØÈÜÒºÖеÄÎïÁÏÊغãÅжϣ»
B£®V£¨KOH£©=10mLʱ£¬·´Ó¦ºóÈÜÖÊΪ̼Ëá¼Ø£¬Ì¼Ëá¸ùÀë×ÓÒÔµÚÒ»²½Ë®½âΪÖ÷£¬Ôòc£¨HCO₃^-£©£¾c£¨H₂CO₃£©£»
C£®V£¨KOH£©=20mLʱ£¬ÈÜÖÊΪµÈŨ¶ÈµÄÇâÑõ»¯¼ØºÍ̼Ëá¼Ø£¬Ì¼Ëá¸ùÀë×Ó²¿·ÖË®½â£¬Ôòc£¨OH^-£©£¾c£¨CO₃^2-£©£»
D£®V£¨KOH£©=10mLʱ£¬·´Ó¦ºóÈÜÖÊΪ̼Ëá¼Ø£¬ÎªKHCO₃ÈÜÒº£¬Ì¼Ëá¸ùÀë×ÓµÄË®½â³Ì¶È½ÏС£¬¼ÓÈȺóÈÔÈ»Âú×ãc£¨CO₃^2-£©£¾c£¨OH^-£©£®

½â´ð ½â£ºA£®V£¨KOH£©=0ʱ£¬ÎªKHCO₃ÈÜÒº£¬¸ù¾Ý̼ËáÇâ¼ØÈÜÒºÖеÄÎïÁÏÊغã¿ÉµÃ£ºc£¨K⁺£©=c£¨HCO₃^-£©+c£¨H₂CO₃£©+c£¨H₂CO₃£©£¬¹ÊA´íÎó£»
B£®V£¨KOH£©=10mLʱ£¬Ì¼ËáÇâ¼ØÓëÇâÑõ»¯¼ØµÄÎïÖʵÄÁ¿ÏàµÈ£¬Ç¡ºÃ·´Ó¦Éú³É̼Ëá¼Ø£¬Ì¼Ëá¼ØÈÜÒºÖÐ̼Ëá¸ùÀë×ÓÒÔµÚÒ»²½Ë®½âΪÖ÷£¬Ôòc£¨HCO₃^-£©£¾c£¨H₂CO₃£©£¬¹ÊBÕýÈ·£»
C£®V£¨KOH£©=20mLʱ£¬KOH¹ýÁ¿£¬ÈÜÖÊΪµÈŨ¶ÈµÄÇâÑõ»¯¼ØºÍ̼Ëá¼Ø£¬ÓÉÓÚ̼Ëá¸ùÀë×Ó²¿·ÖË®½â£¬Ôòc£¨OH^-£©£¾c£¨CO₃^2-£©£¬ÈÜÒºÖÐÀë×ÓŨ¶È´óСΪ£ºc£¨K⁺£©£¾c£¨OH^-£©£¾c£¨CO₃^2-£©£¾c£¨H⁺£©£¬¹ÊC´íÎó£»
D£®V£¨KOH£©=10mLʱ£¬·´Ó¦ºóÈÜÖÊΪ̼Ëá¼Ø£¬¼ÓÈȺó̼Ëá¸ùÀë×ÓµÄË®½â³Ì¶ÈÈÔÈ»²»´ó£¬Ôòc£¨CO₃^2-£©£¾c£¨OH^-£©£¬ÈÜÒºÖÐÕýÈ·µÄÀë×ÓŨ¶È´óСΪ£ºc£¨K⁺£©£¾c£¨CO₃^2-£©£¾c£¨OH^-£©£¾c£¨H⁺£©£¬¹ÊD´íÎó£»
¹ÊÑ¡B£®

µãÆÀ ±¾Ì⿼²éÁËÀë×ÓŨ¶È´óС±È½Ï£¬ÌâÄ¿ÄѶÈÖеȣ¬Ã÷È··´Ó¦ºóÈÜÖÊ×é³ÉΪ½â´ð¹Ø¼ü£¬×¢ÒâÕÆÎÕµçºÉÊغ㡢ÎïÁÏÊغ㼰ÑεÄË®½âÔ­ÀíµÄº¬Òå¼°Ó¦Ó÷½·¨£¬ÊÔÌâÅàÑøÁËѧÉúµÄ·ÖÎöÄÜÁ¦¼°Áé»îÓ¦ÓÃÄÜÁ¦£®