ÌâÄ¿ÄÚÈÝ
ÏÂÁÐÈÜÒºÖи÷΢Á£µÄŨ¶È¹ØÏµÕýÈ·µÄÊÇ£¨¡¡¡¡£©
| A£®0.1 mol?L-1Na2SÈÜÒºÖУº2c£¨Na+£©=c£¨S2-£©+c£¨HS-£©+c£¨H2S£© |
| B£®0£®l mol?L-1pH=9µÄNaNO2ÈÜÒºÖУºc£¨Na+£©£¾c£¨NO2-£©£¾c£¨OH-£©£¾c£¨H+£© |
| C£®µÈpHµÄ°±Ë®¡¢NaOHÈÜÒº¡¢Ba£¨OH£©2ÈÜÒºÖУºc£¨NH4+£©=c£¨Na+£©=c£¨Ba2+£© |
| D£®ÏòNH4HCO3ÈÜÒºÖеμÓNaOHÈÜÒºÖÁpH=7£ºc£¨NH4+£©+c£¨Na+£©=c£¨HCO3-£©+c£¨CO32-£© |
A¡¢0.1 mol?L-1Na2SÈÜÒºÖУ¬¸ù¾ÝÎïÁÏÊØºãµÃ£ºÄÆÀë×Ӻͺ¬ÓÐÁòÔªËØµÄ΢Á£¸öÊýÖ®±ÈÊÇ2£º1£¬ËùÒÔ
c£¨Na+£©=c£¨S2-£©+c£¨HS-£©+c£¨H2S£©£¬¹ÊA´íÎó£®
B¡¢0.1 mol?L-1pH=9µÄNaNO2ÈÜÒºÖУ¬ÑÇÏõËá¸ùÀë×ÓË®½âµ¼ÖÂÈÜÒº³Ê¼îÐÔ£¬ÄÆÀë×Ó²»Ë®½â£¬ËùÒÔÄÆÀë×ÓŨ¶È´óÓÚÑÇÏõËá¸ùÀë×ÓÄÜʹ£¬ÇâÑõ¸ùÀë×ÓŨ¶È´óÓÚÇâÀë×ÓŨ¶È£¬ËùÒÔc£¨Na+£©£¾c£¨NO2-£©£¾c£¨OH-£©£¾c£¨H+£©£¬¹ÊBÕýÈ·£®
C¡¢µÈPHÖµµÄ°±Ë®¡¢NaOHÈÜÒº¡¢Ba£¨OH£©2ÈÜÒºÖУ¬¸ù¾ÝµçºÉÏàµÈµÃ£ºc£¨NH4+£©+c£¨H+£©=c£¨Na+£©+c£¨H+£©=2c£¨Ba2+£©+c£¨H+£©=c£¨OH-£©£¬ÒòΪÇâÀë×ÓŨ¶ÈÏàµÈ£¬ËùÒÔc£¨NH4+£©=c£¨Na+£©=2c£¨Ba2+£©£¬¹ÊC´íÎó£®
D¡¢ÏòNH4HCO3ÈÜÒºÖеμÓNaOHÈÜÒºÖÁpH=7£º¸ù¾ÝµçºÉÊØºãµÃc£¨NH4+£©+c£¨Na+£©+c£¨H+£©=c£¨HCO3-£©+2c£¨CO32-£©+c£¨OH-£©£¬ÒòΪPH=7£¬c£¨H+£©=c£¨OH-£©£¬ËùÒÔc£¨NH4+£©+c£¨Na+£©=c£¨HCO3-£©+2c£¨CO32-£©£¬¹ÊD´íÎó£®
¹ÊÑ¡B£®
| 1 |
| 2 |
B¡¢0.1 mol?L-1pH=9µÄNaNO2ÈÜÒºÖУ¬ÑÇÏõËá¸ùÀë×ÓË®½âµ¼ÖÂÈÜÒº³Ê¼îÐÔ£¬ÄÆÀë×Ó²»Ë®½â£¬ËùÒÔÄÆÀë×ÓŨ¶È´óÓÚÑÇÏõËá¸ùÀë×ÓÄÜʹ£¬ÇâÑõ¸ùÀë×ÓŨ¶È´óÓÚÇâÀë×ÓŨ¶È£¬ËùÒÔc£¨Na+£©£¾c£¨NO2-£©£¾c£¨OH-£©£¾c£¨H+£©£¬¹ÊBÕýÈ·£®
C¡¢µÈPHÖµµÄ°±Ë®¡¢NaOHÈÜÒº¡¢Ba£¨OH£©2ÈÜÒºÖУ¬¸ù¾ÝµçºÉÏàµÈµÃ£ºc£¨NH4+£©+c£¨H+£©=c£¨Na+£©+c£¨H+£©=2c£¨Ba2+£©+c£¨H+£©=c£¨OH-£©£¬ÒòΪÇâÀë×ÓŨ¶ÈÏàµÈ£¬ËùÒÔc£¨NH4+£©=c£¨Na+£©=2c£¨Ba2+£©£¬¹ÊC´íÎó£®
D¡¢ÏòNH4HCO3ÈÜÒºÖеμÓNaOHÈÜÒºÖÁpH=7£º¸ù¾ÝµçºÉÊØºãµÃc£¨NH4+£©+c£¨Na+£©+c£¨H+£©=c£¨HCO3-£©+2c£¨CO32-£©+c£¨OH-£©£¬ÒòΪPH=7£¬c£¨H+£©=c£¨OH-£©£¬ËùÒÔc£¨NH4+£©+c£¨Na+£©=c£¨HCO3-£©+2c£¨CO32-£©£¬¹ÊD´íÎó£®
¹ÊÑ¡B£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿