Question

ºãκãÈÝÌõ¼þÏÂ,Áò¿ÉÒÔ·¢ÉúÈçÏÂת»¯,Æä·´Ó¦¹ý³ÌºÍÄÜÁ¿¹ØϵÈçͼ1Ëùʾ¡£ÒÑÖª:2SO2(g)+O2(g)2SO3(g)¡¡

¦¤H=-196.6 kJ/mol¡£

Çë»Ø´ðÏÂÁÐÎÊÌâ:

(1)д³öÄܱíʾÁòµÄȼÉÕÈȵÄÈÈ»¯Ñ§·½³Ìʽ: ¡£

(2)¦¤H2=¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡£

(3)ºãκãÈÝʱ,1 mol SO2ºÍ2 mol O2³ä·Ö·´Ó¦,·Å³öÈÈÁ¿µÄÊýÖµ±È¨O¦¤H2¨O¡¡¡¡¡¡¡¡(Ìî¡°´ó¡±¡¢¡°Ð¡¡±»ò¡°ÏàµÈ¡±)¡£

(4)½«¢óÖеĻìºÏÆøÌåͨÈë×ãÁ¿µÄNaOHÈÜÒºÖÐÏûºÄNaOHµÄÎïÖʵÄÁ¿Îª¡¡¡¡¡¡¡¡,ÈôÈÜÒºÖз¢ÉúÁËÑõ»¯»¹Ô­·´Ó¦,Ôò¸Ã¹ý³ÌµÄÀë×Ó·½³ÌʽΪ¡¡ ¡£

(5)ºãÈÝÌõ¼þÏÂ,ÏÂÁдëÊ©ÖÐÄÜʹn(SO3)/ n(SO2)Ôö´óµÄÓС¡¡¡¡¡¡¡¡£

a.Éý¸ßζÈ

b.³äÈëHeÆø

c.ÔÙ³äÈë1 mol SO2(g)ºÍ1 mol O2(g)

d.ʹÓô߻¯¼Á

(6)ijSO2(g)ºÍO2 (g)Ìåϵ,ʱ¼ät1´ïµ½Æ½ºâºó,¸Ä±äijһÍâ½çÌõ¼þ,·´Ó¦ËÙÂÊvÓëʱ¼ätµÄ¹ØϵÈçͼ2Ëùʾ,Èô²»¸Ä±äSO2(g)ºÍO2 (g)µÄÁ¿,ÔòͼÖÐt4ʱÒýÆðƽºâÒƶ¯µÄÌõ¼þ¿ÉÄÜÊÇ¡¡¡¡¡¡¡¡;ͼÖбíʾƽºâ»ìºÏÎïÖÐSO3µÄº¬Á¿×î¸ßµÄÒ»¶Îʱ¼äÊÇ¡¡¡¡¡¡¡¡¡£

 

Answer 1

(1)S(s)+O2(g) SO2(g)¡¡¦¤H=-297 kJ/mol

(2)-78.64 kJ/mol

(3)´ó¡¡(4)2 mol¡¡ 2SO2+O2+4OH-2S +2H2O

(5)c¡¡(6)Éý¸ßζȡ¡t3¡«t4

¡¾½âÎö¡¿(1)×¢ÒâÎïÖÊ״̬,ͨ¹ýͼʾµÃ³ö¦¤H¡£

(2)¸ù¾Ý2SO2(g)+O2(g)2SO3(g)¡¡

¦¤H=-196.6 kJ/molÒÔ¼°Éú³É0.8 mol SO3,¿É¼ÆËã³ö¦¤H2Ϊ

-196.6 kJ/mol¡Â2¡Á0.8=-78.64 kJ/mol¡£

(3)¸ù¾ÝÆðʼÁ¿O2¶à,·´Ó¦Éú³ÉSO3¶à,¹Ê¦¤HµÄÊýÖµ´ó¡£

(4)SO2¡¢SO3¶¼ÓëNaOH·´Ó¦¹²ÏûºÄ2 mol NaOH,SO2»¹Ô­ÐÔ½ÏÇ¿ÓëÊ£ÓàµÄO2·´Ó¦:

2SO2+O2+4OH-2S+2H2O¡£

(5)¶ÔÓÚ·´Ó¦2SO2(g)+O2(g)2SO3(g)

¦¤H=-196.6 kJ/mol,Ҫʹn(SO3)/ n(SO2)Ôö´ó¼´Ê¹·´Ó¦ÕýÏò½øÐÐ,ζÈÉý¸ß·´Ó¦ÄæÏò½øÐÐ,³äÈëHeÆø²»Ó°Ïìƽºâ,ÔÙ³äÈë1 mol SO2(g)ºÍ1 mol O2(g)Ï൱ÓÚÔö´óѹǿʹ·´Ó¦ÕýÏò½øÐС£Ê¹Óô߻¯¼Á²»Ó°Ïì

ƽºâ¡£

(6)t2ʱ¿ÌËÙÂÊÔö´ó,·´Ó¦ÕýÏò½øÐÐ,¸Ä±äµÄÊÇÔö´óѹǿ,t4ʱ¿ÌËÙÂÊÔö´ó,·´Ó¦ÄæÏò½øÐÐ,¸Ä±äµÄÊÇÉý¸ßζÈ,t6ʱ¿ÌËÙÂÊÔö´ó,ƽºâ²»Òƶ¯,¸Ä±äµÄÊÇ´ß»¯¼Á,¾Ý´Ë¿ÉÖªSO3Ũ¶È×î¸ßµÄʱ¼ä¶ÎÊÇt3¡«t4¡£