298 K¡¢101 kPaʱ£¬1 g¼×´¼(CH3OH)ÍêȫȼÉÕÉú³ÉCO2ºÍҺ̬ˮ£¬·Å³ö22.68 kJµÄÈÈÁ¿£®ÏÂÁбíʾ¸Ã·´Ó¦µÄÈÈ»¯Ñ§·½³ÌʽÖÐÕýÈ·µÄÊÇ

A£®

CH3OH(l)£«O2(g)CO2(g)£«2H2O(l)

¦¤H£½£­725.8 kJ¡¤mol£­1

B£®

2CH3OH(l)£«3O2(g)2CO2(g)£«4H2O(l)

¦¤H£½£«1451.6 kJ¡¤mol£­1

C£®

2CH3OH(l)£«3O2(g)2CO2(g)£«4H2O(l)

¦¤H£½£­22.68 kJ¡¤mol£­1

D£®

CH3OH(l)£«O2(g)CO2(g)£«2H2O(g)

¦¤H£½£­725.8 kJ¡¤mol£­1

´ð°¸£ºA
½âÎö£º

ÔÚ¸ø¶¨Ìõ¼þÏ£¬¿É¼ÆËã³ö1 mol¡¡CH3OHÍêȫȼÉշųöµÄÈÈÁ¿Îª22.68 kJ¡¤g£­1¡Á32 g£½725.8 kJ£»ÈÈ»¯Ñ§·½³ÌʽÖÐÒ»¶¨Òª×¢Ã÷״̬£¬¦¤HµÄÖµ±ØÐëÊÇ1 mol¡¡CH3OHÍêȫȼÉÕÉú³ÉCO2(g)ºÍH2O(l)Ëù¶ÔÓ¦µÄ·´Ó¦ÈÈ£®BÖЦ¤HӦΪ¸ºÖµ£¬CÖЦ¤HµÄÖµ²»¶Ô£¬DÖÐH2OӦΪҺ̬£®


Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º ÌâÐÍ£º

298 K¡¢101 kPaʱ£¬ºÏ³É°±·´Ó¦µÄÈÈ»¯Ñ§·½³ÌʽΪN2£¨g£©+3H2(g) 2NH3(g)  ¦¤H=£­92.38 kJ¡¤mol-1¡£ÔÚ¸ÃζÈÏ£¬È¡1 mol N2(g)ºÍ3 mol H2(g)·ÅÔÚÒ»ÃܱÕÈÝÆ÷ÖУ¬ÔÚ´ß»¯¼Á´æÔÚÇé¿öϽøÐз´Ó¦£¬²âµÃ·´Ó¦·Å³öµÄÈÈÁ¿×ÜÊÇÉÙÓÚ92.38 kJ,ÆäÔ­ÒòÊÇʲô£¿

_____________________________________________________________________

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º ÌâÐÍ£º

298 K£¬101 kPaʱ£¬ºÏ³É°±·´Ó¦µÄÈÈ»¯Ñ§·½³ÌʽΪ£ºN2£¨g£©+3H2£¨g£©2NH3£¨g£©£»¦¤H=£­92.38 kJ¡¤mol£­1¡£ÔÚ¸ÃζÈÏ£¬È¡1 mol N2£¨g£©ºÍ3 mol H2£¨g£©·ÅÔÚÒ»ÃܱÕÈÝÆ÷ÖУ¬ÔÚ´ß»¯¼Á´æÔÚ½øÐз´Ó¦£¬²âµÃ·´Ó¦·Å³öµÄÈÈÁ¿×ÜÊÇÉÙÓÚ92.38 kJ£¬ÆäÔ­ÒòÊÇʲô£¿

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º ÌâÐÍ£º

298 K¡¢101 kPaʱ£¬1 g¼×´¼(CH3OH)ÍêȫȼÉÕÉú³ÉCO2ºÍҺ̬ˮ£¬·Å³ö22.68 kJµÄÈÈÁ¿¡£ÏÂÁбíʾ¸Ã·´Ó¦µÄÈÈ»¯Ñ§·½³ÌʽÖÐÕýÈ·µÄÊÇ(    )

A.CH3OH(l)+O2(g)CO2(g)+2H2O(l)  ¦¤H=-725.8 kJ¡¤mol-1

B.2CH3OH(l)+3O2(g)2CO2(g)+4H2O(l)  ¦¤H=+1 451.6 kJ¡¤mol-1

C.2CH3OH(l)+3O2(g)2CO2(g)+4H2O(l)   ¦¤H=-22.68 kJ¡¤mol-1

D.CH3OH(l)+O2(g)CO2(g)+2H2O(g)   ¦¤H=-725.8 kJ¡¤mol-1

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º ÌâÐÍ£º

298 K¡¢101 kPaʱ£¬ºÏ³É°±·´Ó¦µÄÈÈ»¯Ñ§·½³ÌʽΪN2£¨g£©+3H2(g) 2NH3(g)  ¦¤H=£­92.38 kJ¡¤mol-1¡£ÔÚ¸ÃζÈÏ£¬È¡1 mol N2(g)ºÍ3 mol H2(g)·ÅÔÚÒ»ÃܱÕÈÝÆ÷ÖУ¬ÔÚ´ß»¯¼Á´æÔÚÇé¿öϽøÐз´Ó¦£¬²âµÃ·´Ó¦·Å³öµÄÈÈÁ¿×ÜÊÇÉÙÓÚ92.38 kJ,ÆäÔ­ÒòÊÇʲô£¿

_____________________________________________________________________

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖл¯Ñ§ À´Ô´£º2014½ì¸£½¨Ê¡¸ß¶þÉÏѧÆÚÆÚÄ©Áª¿¼»¯Ñ§ÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£ºÑ¡ÔñÌâ

ÒÑÖª298 K¡¢101 kPaÌõ¼þÏ£º

¢Ù4Al(s)£«3O2(g)=2Al2O3(s)    ¦¤H£½£­2834.9 kJ¡¤mol£­1

¢Ú4Al(s)£«2O3(g)=2Al2O3(s)    ¦¤H£½£­3119.1 kJ¡¤mol£­1

Óɴ˵óöµÄÕýÈ·½áÂÛÊÇ£¨   £©

A£®µÈÖÊÁ¿µÄO2±ÈO3ÄÜÁ¿µÍ£¬ÓÉO2±äΪO3Ϊ·ÅÈÈ·´Ó¦

B£®O3±ÈO2Îȶ¨£¬ÓÉO2±äΪO3ΪÎüÈÈ·´Ó¦

C£®O2±ÈO3Îȶ¨£¬ÓÉO2±äΪO3Ϊ·ÅÈÈ·´Ó¦

D£®µÈÖÊÁ¿µÄO2±ÈO3ÄÜÁ¿µÍ£¬ÓÉO2±äΪO3ΪÎüÈÈ·´Ó¦

 

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸