ÌâÄ¿ÄÚÈÝ
¸ù¾ÝÈÈ»¯Ñ§·½³Ìʽ:S(s)+O2(g)SO2(g)¡¡¦¤H=a kJ¡¤mol-1(a=-297.2)¡£·ÖÎöÏÂÁÐ˵·¨,ÆäÖв»ÕýÈ·µÄÊÇ(¡¡¡¡)
A£®S(s)ÔÚO2(g)ÖÐȼÉյķ´Ó¦ÊÇ·ÅÈÈ·´Ó¦ |
B£®S(g)+O2(g)SO2(g)¡¡¦¤H=b kJ¡¤mol-1,Ôòa>b |
C£®1 mol SO2(g)Ëù¾ßÓеÄÄÜÁ¿µÍÓÚ1 mol S(s)Óë1 mol O2(g)Ëù¾ßÓеÄÄÜÁ¿Ö®ºÍ |
D£®16 g¹ÌÌåÁòÔÚ¿ÕÆøÖгä·ÖȼÉÕ,¿ÉÎüÊÕ148.6 kJµÄÈÈÁ¿ |
D
½âÎö
ÒÑÖªH¡ªH¼üµÄ¼üÄÜΪ436 kJ/mol£¬O=O¼üµÄ¼üÄÜΪ498 kJ/mol£¬¸ù¾ÝÈÈ»¯Ñ§·½³ÌʽH2(g)£«O2(g)=H2O(l) ¦¤H£½£286 kJ/mol£¬ÅжÏH2O·Ö×ÓÖÐO¡ªH¼üµÄ¼üÄÜΪ( )
A£®485£®5 kJ/mol | B£®610 kJ/mol |
C£®917 kJ/mol | D£®1 220 kJ/mol |
ÏÂÁÐÓйØÈÈ»¯Ñ§·½³Ìʽ¼°ÆäÐðÊöÕýÈ·µÄÊÇ£¨ £©
A£®ÇâÆøµÄȼÉÕÈÈΪ285.5 kJ¡¤mol¡¤£1£¬ÔòË®·Ö½âµÄÈÈ»¯Ñ§·½³ÌʽΪ£º2H2O(l)=2H2£«O2(g)¦¤H£½£«285.5 kJ¡¤mol£1 |
B£®ÒÑÖª2C(ʯī£¬s)£«O2(g)=2CO(g)¦¤H£½£221 kJ¡¤mol£1£¬ÔòʯīµÄȼÉÕÈÈΪ110.5 kJ¡¤mol£1 |
C£®ÒÑÖªN2(g)£«3H2(g) 2NH3(g)¦¤H£½£92.4 kJ¡¤mol£1£¬ ÔòÔÚÒ»¶¨Ìõ¼þϽ«1 mol N2ºÍ3 mol H2ÖÃÓÚÒ»ÃܱÕÈÝÆ÷Öгä·Ö·´Ó¦ºó×î¶à¿É·Å³ö92.4 kJµÄÈÈÁ¿ |
D£®ÒÑÖªÒÒ´¼ºÍÒÒÏ©µÄȼÉÕÈÈ·Ö±ðΪ1 366.8 kJ¡¤mol£1ºÍ1 411.0 kJ¡¤mol£1£¬ÔòÒÒÏ©Ë®»¯ÖÆÒÒ´¼µÄÈÈ»¯Ñ§·½³ÌʽΪ£ºC2H4(g)£«H2O(l)=C2H5OH(l)¡¡¦¤H£½£44.2 kJ¡¤mol£1 |
ÓÃ50 mL 0.50 mol¡¤L-1ÑÎËáºÍ50 mL 0.55 mol¡¤L-1 NaOHÈÜÒº·´Ó¦,ʵÑéÖвâµÃÆðʼζÈΪ20.1 ¡æ,ÖÕֹζÈΪ23.4 ¡æ,·´Ó¦ºóÈÜÒºµÄ±ÈÈÈÈÝΪ4.18 J¡¤g-1¡¤¡æ-1,ÑÎËáºÍNaOHÈÜÒºµÄÃܶȶ¼½üËÆÈÏΪÊÇ1 g¡¤cm-3,ÔòÖкͷ´Ó¦Éú³É1 mol ˮʱ·ÅÈÈ(¡¡¡¡)
A£®55.2 kJ | B£®391 kJ | C£®336 kJ | D£®1.38 kJ |
¡°Ò¡Ò¡±ù¡±ÊÇÒ»ÖÖ¼´Óü´ÀäµÄÒûÁÏ¡£Îüʳʱ,½«ÒûÁϹ޸ôÀë²ãÖеĻ¯Ñ§ÎïÖʺÍË®»ìºÏºóÒ¡¶¯¼´»áÖÆÀä¡£¸Ã»¯Ñ§ÎïÖÊÊÇ(¡¡¡¡)
A£®ÂÈ»¯ÄÆ | B£®¹ÌÌåÏõËáï§ | C£®Éúʯ»Ò | D£®ÕáÌÇ |
ÎüÈÈ·´Ó¦Ò»¶¨ÊÇ( )¡£
A£®ÊÍ·ÅÄÜÁ¿ |
B£®·´Ó¦Îï×ÜÄÜÁ¿¸ßÓÚÉú³ÉÎï×ÜÄÜÁ¿ |
C£®Öü´æÄÜÁ¿ |
D£®·´Ó¦Îï×ÜÄÜÁ¿µÍÓÚÉú³ÉÎï×ÜÄÜÁ¿ |
·´Ó¦A(g)£«B(g) C(g)£«D(g)¹ý³ÌÖеÄÄÜÁ¿±ä»¯ÈçͼËùʾ£¬ÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ£¨ £©
A£®¸Ã·´Ó¦ÊÇ·ÅÈÈ·´Ó¦ |
B£®¼ÓÈë´ß»¯¼Áºó£¬·´Ó¦¼Ó¿ì£¬¦¤E¼õС |
C£®·´Ó¦ÎïµÄ×ܼüÄÜСÓÚÉú³ÉÎïµÄ×ܼüÄÜ |
D£®·´Ó¦´ïµ½Æ½ºâʱ£¬Éý¸ßζȣ¬AµÄת»¯ÂÊÔö´ó |
Ïò×ãÁ¿H2SO4ÈÜÒºÖмÓÈë100mL 0.4 mol¡¤L£1Ba(OH)2ÈÜÒº£¬·Å³öµÄÈÈÁ¿ÊÇ5.12 kJ¡£Èç¹ûÏò×ãÁ¿Ba(OH)2ÈÜÒºÖмÓÈë100mL 0.4 mol¡¤L£1HClÈÜҺʱ£¬·Å³öµÄÈÈÁ¿Îª2.2 kJ¡£ÔòNa2SO4ÈÜÒºÓëBaCl2ÈÜÒº·´Ó¦µÄÈÈ»¯Ñ§·½³ÌʽΪ (¡¡¡¡)
A£®Ba2£«(aq)£«SO42¡ª(aq)=BaSO4(s)£»¦¤H£½£2.92 kJ¡¤mol£1 |
B£®Ba2£«(aq)£«SO42¡ª(aq)=BaSO4(s)£»¦¤H£½£18 kJ¡¤mol£1 |
C£®Ba2£«(aq)£«SO42¡ª(aq)=BaSO4(s)£»¦¤H£½£73 kJ¡¤mol£1 |
D£®Ba2£«(aq)£«SO42¡ª(aq)=BaSO4(s)£»¦¤H£½£0.72 kJ¡¤mol£1 |
ÒÑÖª2SO2£«O22SO3Ϊ·ÅÈÈ·´Ó¦£¬¹ØÓڸ÷´Ó¦µÄÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ(¡¡¡¡)¡£
A£®O2µÄÄÜÁ¿Ò»¶¨¸ßÓÚSO2µÄÄÜÁ¿ |
B£®SO2ºÍO2µÄ×ÜÄÜÁ¿Ò»¶¨¸ßÓÚSO3µÄ×ÜÄÜÁ¿ |
C£®SO2µÄÄÜÁ¿Ò»¶¨¸ßÓÚSO3µÄÄÜÁ¿ |
D£®Òò¸Ã·´Ó¦Îª·ÅÈÈ·´Ó¦£¬¹Ê²»±Ø¼ÓÈÈ·´Ó¦¾Í¿É·¢Éú |