ÌâÄ¿ÄÚÈÝ
5£®ÏÂÁÐÐðÊöÕýÈ·µÄÊÇ£¨¡¡¡¡£©| A£® | 0.1mol•L-1°±Ë®ÖУ¬c£¨OH-£©=c£¨NH4+£© | |
| B£® | ÔÚ0.1mol•L-1CH3COONaÈÜÒºÖУ¬c£¨OH-£©=c£¨CH3COOH£©+c£¨H+£© | |
| C£® | 10 mL 0.02mol•L-1HClÈÜÒºÓë10 mL 0.02mol•L-1Ba£¨OH£©2ÈÜÒº³ä·Ö»ìºÏ£¬Èô»ìºÏºóÈÜÒºµÄÌå»ýΪ20 mL£¬ÔòÈÜÒºµÄpH=10 | |
| D£® | 0.1mol•L-1ij¶þÔªÈõËáÇ¿¼îÑÎNaHAÈÜÒºÖУ¬c£¨Na+£©=2c£¨A2-£©+c£¨HA-£©+c£¨H2A£© |
·ÖÎö A£®°±Ë®ÖдæÔÚË®µÄµçÀ롢һˮºÏ°±µÄµçÀ룻
B£®´×ËáÄÆÈÜÒºÖдæÔÚÖÊ×ÓÊØºã£»
C£®Èô»ìºÏºóÈÜÒºµÄÌå»ýΪ20 mL£¬c£¨OH-£©=$\frac{0.01L¡Á0.02mol/L¡Á2-0.01L¡Á0.02mol/L}{0.02L}$=0.01mol/L£¬Kwδ֪£¬²»ÄܼÆËãc£¨H+£©£»
D£®NaHAÈÜÒºn£¨Na£©=n£¨A£©£®
½â´ð ½â£ºA£®°±Ë®ÖдæÔÚË®µÄµçÀ롢һˮºÏ°±µÄµçÀ룬Ôò0.1mol•L-1°±Ë®ÖУ¬c£¨OH-£©£¾c£¨NH4+£©£¬¹ÊA´íÎó£»
B£®´×ËáÄÆÈÜÒºÖдæÔÚÖÊ×ÓÊØºã£¬Ôòc£¨OH-£©=c£¨CH3COOH£©+c£¨H+£©£¬¹ÊBÕýÈ·£»
C£®Èô»ìºÏºóÈÜÒºµÄÌå»ýΪ20 mL£¬c£¨OH-£©=$\frac{0.01L¡Á0.02mol/L¡Á2-0.01L¡Á0.02mol/L}{0.02L}$=0.01mol/L£¬Kwδ֪£¬²»ÄܼÆËãc£¨H+£©£¬Ôò²»ÄÜÈ·¶¨pH£¬¹ÊC´íÎó£»
D£®NaHAÈÜÒºn£¨Na£©=n£¨A£©£¬Ôòc£¨Na+£©=c£¨A2-£©+c£¨HA-£©+c£¨H2A£©£¬¹ÊD´íÎó£»
¹ÊÑ¡B£®
µãÆÀ ±¾Ì⿼²éÀë×ÓŨ¶È´óСµÄ±È½Ï£¬Îª¸ßƵ¿¼µã£¬°ÑÎÕµçÀ롢ˮ½â¼°ÎïÁÏÊØºã¡¢ÖÊ×ÓÊØºãΪ½â´ðµÄ¹Ø¼ü£¬²àÖØ·ÖÎöÓëÓ¦ÓÃÄÜÁ¦µÄ¿¼²é£¬×¢ÒâÑ¡ÏîCΪÒ×´íµã£¬ÌâÄ¿ÄѶȲ»´ó£®
2H2£¨g£©+O2£¨g£©¨T2H2O£¨l£©¡÷H=b kJ•mol-1
4H2£¨g£©+2O2£¨g£©¨T4H2O£¨l£©¡÷H=c kJ•mol-1
¹ØÓÚËüÃǵÄÏÂÁбíÊöÕýÈ·µÄÊÇ£¨¡¡¡¡£©
| A£® | ËüÃǶ¼ÊÇÎüÈÈ·´Ó¦ | B£® | a¡¢bºÍc¾ùΪÕýÖµ | ||
| C£® | a=b | D£® | 2b=c |
| A£® | ÖÊÁ¿±ÈΪ11£º16 | B£® | ÃܶȱÈΪ11£º16 | C£® | Ìå»ý±ÈΪ11£º16 | D£® | ·Ö×Ó¸öÊý±ÈΪ1£º1 |
| A£® | ÑÎËá | B£® | ÂÈ»¯±µ | C£® | ÏõËáÒøÈÜÒº | D£® | ÇâÑõ»¯ÄÉ |
| A£® | º¬ÓÐÏàͬÑõÔ×ÓÊýµÄSO2ºÍCOµÄÖÊÁ¿ÏàµÈ | |
| B£® | ÎïÖʵÄÁ¿Å¨¶ÈΪ1mol/LµÄNaOHÈÜÒºÓë0.5mol/LµÄCa£¨OH£©2ÈÜÒºËùº¬n£¨OH-£©ÏàµÈ | |
| C£® | 1molÒÒ´¼·Ö×ÓµÄÖÊÁ¿Îª46g | |
| D£® | µÈεÈѹÏ£¬3mol C2H2£¨g£©ºÍ1mol C6H6£¨g£©µÄÃܶÈÏàµÈ |