ÌâÄ¿ÄÚÈÝ
ÏòÈý·ÝͬŨ¶ÈµÄ25mLÑÎËáÖзֱð¼ÓÈëÖÊÁ¿²»µÈµÄNaHCO3¡¢KHCO3µÄ»ìºÏÎ²âµÃ²úÉú
ÆøÌåµÄÌå»ýÈçϱíËùʾ£¨²»¿¼ÂÇÆøÌåÈܽ⣩
񅧏 |
1 |
2 |
3 |
m(»ìºÏÎï)/g |
4.6 |
7.2 |
7.9 |
V(CO2)(±ê×¼×´¿ö)/L |
1.12 |
1.68 |
1.68 |
ÏÂÁзÖÎöÍÆÀíÕýÈ·µÄÊÇ
A£®¸ù¾ÝʵÑé1ÖеÄÊý¾Ý¿ÉÒÔ¼ÆËã³öÑÎËáµÄŨ¶È
B£®»ìºÏÎïÖÐNaHCO3µÄÖÊÁ¿·ÖÊýԼΪ45.7%
C£®¸ù¾ÝµÚ2¡¢3×éÊý¾Ý¿ÉÒÔ·ÖÎö³öµÚ2×éÖеĻìºÏÎïÍêÈ«·´Ó¦
D£®ÑÎËáµÄÎïÖʵÄÁ¿Å¨¶ÈΪ1.5mol.L-1
B
¡¾½âÎö¡¿
ÊÔÌâ·ÖÎö£º¼ÙÉè»ìºÏÎïÖÐn(NaHCO3)Ϊxmol¡¢n(KHCO3) Ϊxmol£¬ÒÀÌâÒ⣬ÔòÓУºx£«y£½0.05£»84x£«100y£½4.6,½âÖ®µÃ£ºx=y=0.025mol¡£A¡¢¸ù¾ÝʵÑé1ÖеÄÊý¾ÝÖ»¿ÉÒÔ¼ÆËã³ö»ìºÏÎï¸÷×ÔµÄÖÊÁ¿£¬´íÎó£»B¡¢ÕýÈ·£»C¡¢²»ÄÜÒÀ´ËÈ·¶¨»ìºÏÎïÍêÈ«·´Ó¦£¬´íÎó£»D¡¢ÑÎËáµÄÎïÖʵÄÁ¿Å¨¶ÈΪ3mol.L-1¡£´íÎó¡£
¿¼µã£º»¯ºÏÎïµÄ¼ÆËãµÄ֪ʶ¡£
100mLÑÎËá | 100mLÑÎËá | 100mLÑÎËá | |
m£¨»ìºÏÎ | 9.2g | 15.7g | 27.6g |
V£¨CO2£©£¨±ê×¼×´¿ö£© | 2.24L | 3.36L | 3.36L |
A¡¢ÑÎËáÎïÖʵÄÁ¿Å¨¶ÈΪ3.0 mol/L |
B¡¢15.7 g»ìºÏÎïÓëÑÎËá·´Ó¦ºóÓÐÊ£Óà |
C¡¢¼ÓÈë9.2 g»ìºÏÎïʱÏûºÄHCl 0.1 mol |
D¡¢»ìºÏÎïÖÐNaHCO3ºÍKHCO3µÄÖÊÁ¿±ÈΪ1£º1 |
ÏòÈý·ÝͬŨ¶ÈµÄ25mLÑÎËáÖзֱð¼ÓÈëÖÊÁ¿²»µÈµÄNaHCO3¡¢KHCO3µÄ»ìºÏÎ²âµÃ²úÉúÆøÌåµÄÌå»ýÈçϱíËùʾ£¨²»¿¼ÂÇÆøÌåÈܽ⣩
񅧏 | 1 | 2 | 3 |
m(»ìºÏÎï)/g | 4.6 | 7.2 | 7.9 |
V(CO2)(±ê×¼×´¿ö)/L | 1.12 | 1.68 | 1.68 |
ÏÂÁзÖÎöÍÆÀíÕýÈ·µÄÊÇ
- A.¸ù¾ÝʵÑé1ÖеÄÊý¾Ý¿ÉÒÔ¼ÆËã³öÑÎËáµÄŨ¶È
- B.»ìºÏÎïÖÐNaHCO3µÄÖÊÁ¿·ÖÊýԼΪ45.7%
- C.¸ù¾ÝµÚ2¡¢3×éÊý¾Ý¿ÉÒÔ·ÖÎö³öµÚ2×éÖеĻìºÏÎïÍêÈ«·´Ó¦
- D.ÑÎËáµÄÎïÖʵÄÁ¿Å¨¶ÈΪ1.5mol.L-1