ÌâÄ¿ÄÚÈÝ

¢Å³£ÎÂÏÂÈ¡0.2mol/LHClÈÜÒºÓë0.2mol/LMOHÈÜÒºµÈÌå»ý»ìºÏ(ºöÂÔ»ìºÏºóÈÜÒºÌå»ýµÄ±ä»¯)£¬²âµÃ»ìºÏÈÜÒºµÄpH£½6£¬ÊԻشðÒÔÏÂÎÊÌ⣺

¢Ù»ìºÏÈÜÒºÖÐÓÉË®µçÀë³öµÄc(H+)________0.2mol/LHClÈÜÒºÖÐÓÉË®µçÀë³öµÄc(H+)£»

(Ìî¡°>¡±¡¢¡°<¡±¡¢»ò¡°£½¡±)

¢ÚÇó³ö»ìºÏÎïÖÐÏÂÁÐËãʽµÄ¾«È·¼ÆËã½á¹û(Ìî¾ßÌåÊý×Ö)£ºc(Cl£­)¡ªc(M+)£½________mol/L£¬c(H+)¡ªc(MOH)£½________mol/L£®

¢ÆÈç¹û³£ÎÂÏÂÈ¡0.2mol/LMOHÈÜÒºÓë0.1mol/LHClÈÜÒºµÈÌå»ý»ìºÏ£¬²âµÃ»ìºÏÈÜÒºµÄPH£¼7£¬Ôò˵Ã÷MOHµÄµçÀë³Ì¶È________MClµÄË®½â³Ì¶È£®(Ìî¡°>¡±¡¢¡°<¡±¡¢»ò¡°£½¡±)

(3)ÈõËáµÄÏà¶ÔÇ¿Èõ¿ÉÒÔÓõçÀë³£Êý(K)±íʾ£®ÒÔHFΪÀý£¬ÆäµçÀë³£ÊýµÄ¼ÆËã·½·¨ÊÇ£ºK£½£Ûc(H+)¡¢c(F£­)¡¢c(HF)ΪHFÔÚË®ÈÜÒºÖдïµçÀëƽºâʱµÄŨ¶È£Ý£®Í¬Ñù£¬ÈõËáÑκÍÈõ¼îÑεÄË®½â³Ì¶ÈÒ²¿ÉÓÃË®½â³£Êý(Kh)±íʾ£¬Æä¼ÆËã·½·¨ºÍµçÀë³£ÊýÒ»Ñù£®×ÊÁϱíÃ÷£¬H2CO3ÔÚË®ÖзÖÁ½²½µçÀ룬³£ÎÂʱµÄµçÀë³£Êý·Ö±ðΪK1£½4.3¡Á10£­7£¬K2£½4.8¡Á10£­11£®»Ø´ðÏÂÁÐÎÊÌ⣺³£ÎÂʱ0.1mol/LµÄNa2CO3ÈÜÒºÖÐCO32£­µÄË®½â³£Êý(ºöÂÔµÚ¶þ²½Ë®½â)Kh£½________£¬c(OH£­)£½________£®

´ð°¸£º
½âÎö£º

(1)>9.9¡Á10£­710£­8

(2)<

(3)2.1¡Á10£­44.5¡Á10£­3mol/L


Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
루N2H4£©ÓÖ³ÆÁª°±£¬ÊÇÒ»ÖÖ¿ÉȼÐÔµÄÒºÌ壬¿ÉÓÃ×÷»ð¼ýȼÁÏ£®
£¨1£©ÒÑÖªÔÚ25¡æ£¬101kPaʱ£¬16.0g N2H4ÔÚÑõÆøÖÐÍêȫȼÉÕÉú³ÉµªÆø£¬·Å³öÈÈÁ¿312kJ£¬N2H4ÍêȫȼÉÕ·´Ó¦µÄÈÈ»¯Ñ§·½³ÌʽÊÇ
N2H4£¨l£©+O2£¨g£©=N2£¨g£©+2H2O£¨l£©¡÷H=-624KJ/mol
N2H4£¨l£©+O2£¨g£©=N2£¨g£©+2H2O£¨l£©¡÷H=-624KJ/mol
£®ëÂ-¿ÕÆøȼÁϵç³ØÊÇÒ»ÖÖ¼îÐÔȼÁϵç³Ø£¬µç½âÖÊÈÜÒºÊÇ20%¡«30%µÄKOHÈÜÒº£®ëÂ-¿ÕÆøȼÁϵç³Ø·Åµçʱ£¬¸º¼«µÄµç¼«·´Ó¦Ê½ÊÇ£º
N2H4+4OH--4e-=4H2O+N2
N2H4+4OH--4e-=4H2O+N2
£®µç³Ø¹¤×÷Ò»¶Îʱ¼äºó£¬µç½âÖÊÈÜÒºµÄpH½«
¼õС
¼õС
£¨Ìî¡°Ôö´ó¡±¡¢¡°¼õС¡±¡¢¡°²»±ä¡±£©£®
£¨2£©ÈçͼÊÇÒ»¸öµç»¯Ñ§×°ÖÃʾÒâͼ£®ÓÃëÂ--¿ÕÆøȼÁϵç³Ø×ö´Ë×°ÖõĵçÔ´£®Èç¹ûAÊDz¬µç¼«£¬BÊÇʯīµç¼«£¬CÊÇ500mL×ãÁ¿µÄ±¥ºÍÂÈ»¯ÄÆÈÜÒº£¬µ±Á½¼«¹²²úÉú1.12LÆøÌåʱ£¬ÈÜÒºµÄpHΪ
13
13
£¬ÔòëÂ-¿ÕÆøȼÁϵç³ØÀíÂÛÉÏÏûºÄµÄ¿ÕÆø
1.4
1.4
L£¨ÆøÌåÌå»ýÔÚ±ê×¼×´¿öϲⶨ£¬¼ÙÉè¿ÕÆøÖÐÑõÆøÌå»ý·ÖÊýΪ20%£©
£¨3£©ëÂÒ×ÈÜÓÚË®£¬ËüÊÇÓë°±ÀàËƵÄÈõ¼î£¬ÓõçÀë·½³Ìʽ±íʾëµÄË®ÈÜÒºÏÔ¼îÐÔµÄÔ­Òò
N2H4+H2O=N2H5++OH-£»N2H5++H2O=N2H62++OH-
N2H4+H2O=N2H5++OH-£»N2H5++H2O=N2H62++OH-
£®
£¨4£©³£ÎÂϽ«0.2mol/L HClÈÜÒºÓë0.2mol/L N2H4?H2OÈÜÒºµÈÌå»ý»ìºÏ£¨ºöÂÔ»ìºÏºóÈÜÒºÌå»ýµÄ±ä»¯£©£¬Èô²âµÃ»ìºÏÈÜÒºµÄpH=6£¬Ôò»ìºÏÈÜÒºÖÐÓÉË®µçÀë³öµÄc£¨H+£©
´óÓÚ
´óÓÚ
0.1mol/L HClÈÜÒºÖÐÓÉË®µçÀë³öµÄc£¨H+£©£¨Ìî¡°´óÓÚ¡±¡¢¡°Ð¡ÓÚ¡±¡¢»ò¡°µÈÓÚ¡±£©£®
£¨5£©ÒÑÖª£ºÔÚÏàͬÌõ¼þÏÂN2H4?H2OµÄµçÀë³Ì¶È´óÓÚN2H5C1µÄË®½â³Ì¶È£®³£ÎÂÏ£¬Èô½«0.2mol/L N2H4?H2OÈÜÒºÓë0.1mol/L HClÈÜÒºµÈÌå»ý»ìºÏ£¬ÔòÈÜÒºÖÐN2H+5¡¢Cl-¡¢OH-¡¢H+Àë×ÓŨ¶ÈÓÉ´óµ½Ð¡µÄ˳ÐòΪ
c£¨N2H5+£©£¾c£¨Cl-£©£¾c£¨OH-£©£¾c£¨H+£©
c£¨N2H5+£©£¾c£¨Cl-£©£¾c£¨OH-£©£¾c£¨H+£©
£®

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø