Question

1£®½«±ê¿öϵÄ2.24LCO₂ͨÈë150mL 1mol•L^-1NaOHÈÜÒºÖУ¬ÈÜÒºÖÐÀë×ÓŨ¶ÈÓÉСµ½´óµÄ˳ÐòΪ £¨¡¡¡¡£©

• A£® c£¨Na⁺£©£¾c£¨HCO₃^-£©£¾c£¨CO₃^2-£©£¾c£¨OH^-£©£¾c£¨H⁺£©
• B£® c£¨Na⁺£©£¾c£¨HCO₃^-£©=c£¨CO₃^2-£©£¾c£¨OH^-£©£¾c£¨H⁺£©£®
• C£® c£¨Na⁺£©£¾c£¨CO₃^2-£©£¾c£¨HCO₃^-£©£¾c£¨OH^-£©£¾c£¨H⁺£©
• D£® c£¨Na⁺£©+c£¨H⁺£©=c£¨HCO₃^-£©+c£¨CO₃^2-£©+c£¨OH^-£©

Answer 1

·ÖÎö ±ê×¼×´¿öÏÂ2.24LCO₂µÄÎïÖʵÄÁ¿Îª0.1mol£¬150mL 1mol/LNaOHÈÜÒºÖк¬ÓÐ0.15molNaOH£¬¶þÕßÇ¡ºÃ·¢Éú·´Ó¦2CO₂+3NaOH=Na₂CO₃+NaHCO₃+H₂O£¬·´Ó¦ºóÉú³ÉÁ˵ÈŨ¶ÈµÄ̼ËáÄƺÍ̼ËáÇâÄÆ£¬È»ºó½áºÏÑεÄË®½âÔ­ÀíÅжϸ÷Àë×ÓŨ¶È´óС£®

½â´ð ½â£º±ê×¼×´¿öÏ£¬2.24LCO₂µÄÎïÖʵÄÁ¿Îª£º$\frac{2.24L}{22.4L/mol}$=0.1mol£¬
150mL 1mol/LNaOHÈÜÒºÖк¬ÓÐ0.15molNaOH£¬¶þÕß·¢Éú·´Ó¦2CO₂+3NaOH=Na₂CO₃+NaHCO₃+H₂OÉú³ÉµÈŨ¶ÈµÄNa₂CO₃¡¢NaHCO₃£¬
HCO₃^-¡¢CO₃^2-²¿·ÖË®½â£¬ÈÜÒº³Ê¼îÐÔ£¬Ôòc£¨OH^-£©£¾c£¨H⁺£©£¬
ÓÉÓÚCO₃^2-Ë®½â³Ì¶È´óÓÚHCO₃^-£¬Ôòc£¨HCO₃^-£©£¾c£¨CO₃^2-£©£¬
ËùÒÔ·´Ó¦ºóÈÜÒºÖеÄÀë×ÓŨ¶È´óСΪ£ºc£¨Na⁺£©£¾c£¨HCO₃^-£©£¾c£¨CO₃^2-£©£¾c£¨OH^-£©£¾c£¨H⁺£©£¬¹ÊÑ¡A£®

µãÆÀ ±¾Ì⿼²éÁËÀë×ÓŨ¶È´óС±È½Ï£¬ÌâÄ¿ÄѶÈÖеȣ¬Ã÷È··´Ó¦ºóÈÜÖÊ×é³ÉΪ½â´ð¹Ø¼ü£¬×¢ÒâÕÆÎÕÑεÄË®½âÔ­Àí¼°ÆäÓ°Ï죬ҪÇóѧÉúÄܹ»¸ù¾ÝµçºÉÊغ㡢ÑεÄË®½âÔ­ÀíµÈ֪ʶÅжÏÈÜÒºÖÐÀë×ÓŨ¶È´óС£®