Question

N₂H₄ÊÇÒ»ÖÖ¸ßЧÇå½àµÄ»ð¼ýȼÁÏ¡£0.25 mol N₂H₄£¨g£©ÍêȫȼÉÕÉú³ÉµªÆøºÍÆø̬ˮʱ£¬·Å³ö133.5 kJÈÈÁ¿¡£ÔòÏÂÁÐÈÈ»¯Ñ§·½³ÌʽÖÐÕýÈ·µÄÊÇ£¨    £©

A£®1/2N₂H₄£¨g£©£«O₂£¨g£©====1/2N₂£¨g£©£«1/2H₂O£¨g£©£»¦¤H=£«267 kJ¡¤mol^£­1

B£®N₂H₄£¨g£©£«O₂£¨g£©====N₂£¨g£©£«2H₂O£¨g£©£»¦¤H =£­534 kJ¡¤mol^£­1

C£®N₂H₄£¨g£©£«O₂£¨g£©====N₂£¨g£©£«2H₂O£¨g£©£»¦¤H =£«534 kJ¡¤mol^£­1

D£®N₂H₄£¨g£©£«O₂£¨g£©====N₂£¨g£©£«2H₂O£¨l£©£»¦¤H =£­133.5 kJ¡¤mol^£­1

 

Answer 1

¡¾´ð°¸¡¿

B

¡¾½âÎö¡¿¿¼²éÈÈ»¯Ñ§·½³ÌʽµÄÅжϡ£È¼ÉÕÊÇ·ÅÈÈ·´Ó¦£¬¡÷HСÓÚ0£¬ÊÔÌâÑ¡ÏîAC²»ÕýÈ·£»Ñ¡ÏîDÖÐË®µÄ״̬±íʾÆø̬£¬²»ÕýÈ·£¬´ð°¸Ñ¡B¡£