ÌâÄ¿ÄÚÈÝ
NaCl | Na2O | AlF3 | AlCl3 | BCl3 | Al2O3 | CO2 | SiO2 |
801 | 920 | 1291 | 190 | -109 | 2073 | -57 | 1723 |
A£®ÂÁµÄ»¯ºÏÎᄃÌåÖÐÓÐÀë×Ó¾§Ìå
B£®±íÖÐÖ»ÓÐBCl3£¬¸É±ùÊÇ·Ö×Ó¾§Ìå
C£®Í¬×åÔªËصÄÑõ»¯Îï¿ÉÐγɲ»Í¬ÀàÐ͵ľ§Ìå
D£®²»Í¬×åÔªËصÄÑõ»¯Îï¿ÉÐγɲ»Í¬ÀàÐ͵ľ§Ìå
£¨2£©SiO2¾§Ìå½á¹¹Æ¬¶ÏÈçͼËùʾ£®SiO2¾§ÌåÖÐSiºÍSi-O¼üµÄ±ÈÀýΪ
»¯Ñ§¼ü | Si-O | Si-Si | O-O |
¼üÄÜ/KJ£®mol-1 | 460 | 176 | 498 |
| ||
B£®±íÖÐAlCl3¡¢BCl3ºÍ¸É±ùÊÇ·Ö×Ó¾§Ì壻
C£®CºÍSiͬÖ÷×壬µ«Ñõ»¯ÎïµÄ¾§ÌåÀàÐͲ»Í¬£»
D£®NaºÍAl²»Í¬Ö÷×壬µ«¶ÔÓ¦µÄÑõ»¯ÎﶼΪÀë×Ó¾§Ì壮
£¨2£©¶þÑõ»¯¹è¾§ÌåÖÐÿ¸öSiÔ×ÓÐγÉ4¸öSi-O¼ü£¬1mol¶þÑõ»¯¹è¾§ÌåÖк¬ÓÐ4molSi-O¼ü£¬·´Ó¦ÈÈ¡÷H=·´Ó¦Îï×ܼüÄÜ-Éú³ÉÎï×ܼüÄÜ£®
B£®±íÖÐAlCl3¡¢BCl3ºÍ¸É±ùÊÇ·Ö×Ó¾§Ì壬·Ðµã¶¼½ÏµÍ£¬¹ÊB´íÎó£»
C£®CºÍSiͬÖ÷×壬µ«Ñõ»¯ÎïµÄ¾§ÌåÀàÐͲ»Í¬£¬·Ö±ðÊôÓÚ·Ö×Ó¾§ÌåºÍÔ×Ó¾§Ì壬¹ÊCÕýÈ·£»
D£®NaºÍAl²»Í¬Ö÷×壬µ«¶ÔÓ¦µÄÑõ»¯ÎﶼΪÀë×Ó¾§Ì壬˵Ã÷²»Í¬×åÔªËصÄÑõ»¯Îï¿ÉÐγÉÏàͬÀàÐ͵ľ§Ì壬¹ÊDÕýÈ·£®
¹Ê´ð°¸Îª£ºB£®
£¨2£©¶þÑõ»¯¹è¾§ÌåÖÐÿ¸öSiÔ×ÓÐγÉ4¸öSi-O¼ü£¬1mol¶þÑõ»¯¹è¾§ÌåÖк¬ÓÐ4molSi-O¼ü£¬ÔòSiO2¾§ÌåÖÐSiºÍSi-O¼üµÄ±ÈÀýΪ1£º4£¬
Òò¾§Ìå¹èÖÐÿ¸öSiÔ×ÓÓëÖÜΧµÄ4¸ö¹èÔ×ÓÐγÉÕýËÄÃæÌ壬Ïò¿Õ¼äÑÓÉìµÄÁ¢ÌåÍø×´½á¹¹£¬Ã¿SiÔ×ÓÓëÖÜΧµÄ4¸öSiÔ×ÓÐγÉ4¸öSi-Si¼ü£¬Ã¿¸öSi-Si¼üΪ1¸öSiÔ×ÓÌṩ
1 |
2 |
1 |
2 |
·´Ó¦ÈÈ¡÷H=·´Ó¦Îï×ܼüÄÜ-Éú³ÉÎï×ܼüÄÜ£¬ËùÒÔSi£¨s£©+O2£¨g£©=SiO2£¨s£©ÖУ¬¡÷H=176kJ/mol¡Á2mol+498kJ/mol-460kJ/mol¡Á4=-990 kJ/mol£®
¹Ê´ð°¸Îª£º1£º4£»-990 kJ/mol£®
£¨6·Ö£©£¨1£©ÏÂÁÐÊý¾ÝÊǶÔÓ¦ÎïÖʵÄÈ۵㣨¡æ)
NaCl | Na2O | AlF3 | AlCl3 | BCl3 | Al2O3 | CO2 | SiO2 |
801 | 920 | 1291 | 190 | £109 | 2073 | £57 | 1723 |
¾Ý´Ë×÷³öµÄÏÂÁÐÅжÏÖУ¬´íÎóµÄÊÇ
A¡¢ÂÁµÄ»¯ºÏÎᄃÌåÖÐÓÐÀë×Ó¾§Ìå
B¡¢±íÖÐÖ»ÓÐBCl3¡¢¸É±ùÊÇ·Ö×Ó¾§Ìå
C¡¢Í¬×åÔªËصÄÑõ»¯Îï¿ÉÐγɲ»Í¬ÀàÐ͵ľ§Ìå
D¡¢²»Í¬×åÔªËصÄÑõ»¯Îï¿ÉÐγɲ»Í¬ÀàÐ͵ľ§Ìå
£¨2£©SiO2¾§Ìå½á¹¹Æ¬¶ÏÈçͼËùʾ¡£SiO2¾§ÌåÖÐSiºÍSi£O¼üµÄ±ÈÀýΪ_____________¡£
ͨ³£ÈËÃǰѲð¿ª1mol ij»¯Ñ§¼üËùÎüÊÕµÄÄÜÁ¿¿´³É¸Ã»¯Ñ§¼üµÄ¼üÄÜ¡£
»¯Ñ§¼ü | Si£O | Si£Si | O£½O |
¼üÄÜ/ KJ¡¤mol£1 | 460 | 176 | 498 |
¡¡¡¡Si£¨s)£«O2£¨g)SiO2£¨s)£¬¸Ã·´Ó¦µÄ·´Ó¦ÈÈ¡÷H =___________
£¨6·Ö£©£¨1£©ÏÂÁÐÊý¾ÝÊǶÔÓ¦ÎïÖʵÄÈ۵㣨¡æ)
NaCl | Na2O | AlF3 | AlCl3 | BCl3 | Al2O3 | CO2 | SiO2 |
801 | 920 | 1291 | 190 | £109 | 2073 | £57 | 1723 |
A¡¢ÂÁµÄ»¯ºÏÎᄃÌåÖÐÓÐÀë×Ó¾§Ìå
B¡¢±íÖÐÖ»ÓÐBCl3¡¢¸É±ùÊÇ·Ö×Ó¾§Ìå
C¡¢Í¬×åÔªËصÄÑõ»¯Îï¿ÉÐγɲ»Í¬ÀàÐ͵ľ§Ìå
D¡¢²»Í¬×åÔªËصÄÑõ»¯Îï¿ÉÐγɲ»Í¬ÀàÐ͵ľ§Ìå
£¨2£©SiO2¾§Ìå½á¹¹Æ¬¶ÏÈçͼËùʾ¡£SiO2¾§ÌåÖÐSiºÍSi£O¼üµÄ±ÈÀýΪ_____________¡£
ͨ³£ÈËÃǰѲð¿ª1mol ij»¯Ñ§¼üËùÎüÊÕµÄÄÜÁ¿¿´³É¸Ã»¯Ñ§¼üµÄ¼üÄÜ¡£
»¯Ñ§¼ü | Si£O | Si£Si | O£½O |
¼üÄÜ/ KJ¡¤mol£1 | 460 | 176 | 498 |
£¨5·Ö£©£¨1£©ÏÂÁÐÊý¾ÝÊǶÔÓ¦ÎïÖʵÄÈ۵㣨¡æ)
NaCl |
Na2O |
AlF3 |
AlCl3 |
BCl3 |
Al2O3 |
CO2 |
SiO2 |
801 |
920 |
1291 |
190 |
£109 |
2073 |
£57 |
1723 |
¾Ý´Ë×÷³öµÄÏÂÁÐÅжÏÖУ¬´íÎóµÄÊÇ
A£®ÂÁµÄ»¯ºÏÎᄃÌåÖÐûÓÐÀë×Ó¾§Ìå
B£®±íÖÐÖ»ÓÐBCl3£¬¸É±ùÊÇ·Ö×Ó¾§Ìå
C£®Í¬×åÔªËصÄÑõ»¯Îï¿ÉÐγɲ»Í¬ÀàÐ͵ľ§Ìå
D£®²»Í¬×åÔªËصÄÑõ»¯Îï¿ÉÐγɲ»Í¬ÀàÐ͵ľ§Ìå
£¨2£©SiO2¾§Ìå½á¹¹Æ¬¶ÏÈçͼËùʾ¡£SiO2¾§ÌåÖÐSiºÍSi¡ªO¼üµÄ±ÈÀýΪ ¡£
ͨ³£ÈËÃǰѲð¿ª1molij»¯Ñ§¼üËùÎüÊÕµÄÄÜÁ¿¿´³É¸Ã»¯Ñ§¼üµÄ¼üÄÜ¡£
»¯Ñ§¼ü |
Si¡ªO |
Si¡ªSi |
O£½O |
¼üÄÜkJ/mol |
460 |
176 |
498 |
Si(s)+O2(g) SiO2(s)£¬¸Ã·´Ó¦µÄ·´Ó¦ÈÈ¡÷H£½ ¡£
£¨6·Ö£©£¨1£©ÏÂÁÐÊý¾ÝÊǶÔÓ¦ÎïÖʵÄÈ۵㣨¡æ)
NaCl |
Na2O |
AlF3 |
AlCl3 |
BCl3 |
Al2O3 |
CO2 |
SiO2 |
801 |
920 |
1291 |
190 |
£109 |
2073 |
£57 |
1723 |
¾Ý´Ë×÷³öµÄÏÂÁÐÅжÏÖУ¬´íÎóµÄÊÇ
A¡¢ÂÁµÄ»¯ºÏÎᄃÌåÖÐÓÐÀë×Ó¾§Ìå
B¡¢±íÖÐÖ»ÓÐBCl3¡¢¸É±ùÊÇ·Ö×Ó¾§Ìå
C¡¢Í¬×åÔªËصÄÑõ»¯Îï¿ÉÐγɲ»Í¬ÀàÐ͵ľ§Ìå
D¡¢²»Í¬×åÔªËصÄÑõ»¯Îï¿ÉÐγɲ»Í¬ÀàÐ͵ľ§Ìå
£¨2£©SiO2¾§Ìå½á¹¹Æ¬¶ÏÈçͼËùʾ¡£SiO2¾§ÌåÖÐSiºÍSi£O¼üµÄ±ÈÀýΪ_____________¡£
ͨ³£ÈËÃǰѲð¿ª1mol ij»¯Ñ§¼üËùÎüÊÕµÄÄÜÁ¿¿´³É¸Ã»¯Ñ§¼üµÄ¼üÄÜ¡£
»¯Ñ§¼ü |
Si£O |
Si£Si |
O£½O |
¼üÄÜ/ KJ¡¤mol£1 |
460 |
176 |
498 |
¡¡¡¡Si£¨s)£«O2£¨g) SiO2£¨s)£¬¸Ã·´Ó¦µÄ·´Ó¦ÈÈ¡÷H = ___________