ÌâÄ¿ÄÚÈÝ
ijÌìÈ»¼î£¨´¿¾»Î¿É¿´×öÓÉCO2ºÍNaOH·´Ó¦ºóµÄ²úÎïËù×é³É¡£³ÆÈ¡ÌìÈ»¼îÑùÆ·ËÄ·Ý£¬ÈÜÓÚË®ºó£¬·Ö±ðÖðµÎ¼ÓÈëÏàͬŨ¶ÈµÄÑÎËáÈÜÒº30mL£¬²úÉúCO2Ìå»ý£¨±ê×¼×´¿ö£©ÈçÏÂ±í£º¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¢ñ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¢ò¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¢ó¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¢ô
ÑÎËáÈÜÒºµÄÌå»ý(mL)¡¡¡¡¡¡¡¡ 30¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ 30¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ 30¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ 30
ÑùÆ·(g)¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ 3.32¡¡¡¡¡¡¡¡¡¡¡¡ 4.15¡¡¡¡¡¡¡¡¡¡¡¡ 5.81¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ 7.47
¶þÑõ»¯Ì¼µÄÌå»ý(mL)¡¡¡¡¡¡¡¡ 672¡¡¡¡¡¡¡¡¡¡¡¡ 840¡¡¡¡¡¡¡¡¡¡¡¡ 896¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ 672
£¨1£©Óɵڢñ×éÊý¾ÝÖеÄCO2Ìå»ýÓëÑùÆ·ÖÊÁ¿Ö®±È£¬¿ÉÒÔÍƲâÓÃ2.49gÑùÆ·½øÐÐͬÑùµÄʵÑéʱ£¬²úÉúCO2________mL£¨±ê×¼×´¿ö£©¡£
£¨2£©ÁíÈ¡3.32gÌìÈ»¼îÑùÆ·ÓÚ300¡æ¼ÓÈÈ·Ö½âÖÁÍêÈ«£¨300¡æʱNa2CO3²»·Ö½â£©£¬²úÉúCO2112mL£¨±ê×¼×´¿ö£©ºÍË®0.45g£¬¼ÆË㲢ȷ¶¨¸ÃÌìÈ»¼îµÄ»¯Ñ§Ê½¡£
£¨3£©ÒÑÖªNa2CO3ºÍHCl(aq)µÄ·´Ó¦·ÖÏÂÁÐÁ½²½½øÐУº
Na2CO3+HCl¡úNaCl+NaHCO3
NaHCO3+HCl¡úNaCl+CO2¡ü+H2O
ÓÉÉϱíÖеڢô×éÊý¾Ý¿ÉÒÔÈ·¶¨ËùÓõÄHCl(aq)µÄŨ¶ÈΪ________mol/L
£¨4£©ÒÀ¾ÝÉϱíËùÁÐÊý¾ÝÒÔ¼°ÌìÈ»¼îµÄ»¯Ñ§Ê½£¬ÌÖÂÛ²¢È·¶¨ÉÏÊöʵÑéÖÐCO2£¨±ê×¼×´¿ö£©Ìå»ýV(mL)ÓëÑùÆ·ÖÊÁ¿W(g)Ö®¼äµÄ¹Øϵʽ¡£
½âÎö£º
£¨1£©504
£¨2£©ÓÉÌâÒâ¿ÉÖª£¬ÌìÈ»¼îº¬NaHCO3¡¢Na2CO3 2NaHCO3Na2CO3+CO2¡ü+H2O 2mol 22.4L 18g x 0.112L y x=0.01mol y=0.09g n(Na2CO3)= n(H2O)= =0.02(mol) ¡à ÌìÈ»¼î×é³É£º2Na2CO3¡ÁNaHCO3¡Á2H2O £¨3£©2.5 £¨4£©0<W£4.98 V(CO2)=202.4W(mL) 4.98£W£12.45 V(CO2)=1680-134.9W(mL) ¾ßÌå½â´ð¹ý³ÌÈçÏ£º £¨1£©3.32©U672=2.49©UV(CO2) V(CO2)=504(mL) £¨3£©30mL HCl(aq)ÖÐËùº¬HClÎïÖʵÄÁ¿£º n(HCl)= ´2+=0.075(mol) C(HCl)= =2.5mol/L £¨4£©ºÍ30mL HCl(aq)ÍêÈ«·´Ó¦µÄÑùÆ·µÄÖÊÁ¿£º ´332=4.98(g) µ±W£4.98ʱ£¬V(CO2)= ´3´22400=202.4W(mL)¡£ ÑùÆ·ÖÐNa2CO3ºÍÑÎËá·´Ó¦ÍêÈ«Éú³ÉNaHCO3ʱ£¨Ã»ÓÐCO2·Å³öʱ£¬£©ÑùÆ·µÄÖÊÁ¿£º ´332=12.45(g) µ±4.98<W<12.45ʱ£¬ÑÎËáÊ×ÏȺÍNa2CO3·´Ó¦Éú³ÉNaHCO3£¬Ê£ÓàµÄÑÎËáÔÙºÍNaHCO3·´Ó¦·Å³öCO2ÆøÌ壬 ¼´V(CO2)= (0.075-´2 )´22400=1680-134.9W(mL)¡£
|
ijÌìÈ»¼î£¨´¿¾»Î¿É¿´×÷ÓÉCO2ºÍNaOH·´Ó¦ºóµÄ²úÎïËù×é³É¡£³ÆÈ¡ÌìÈ»¼îÑùÆ·ËÄ·Ý£¬ÈÜÓÚË®ºó£¬·Ö±ðÖðµÎ¼ÓÈëÏàͬŨ¶ÈµÄÑÎËáÈÜÒº30mL£¬²úÉúCO2µÄÌå»ý£¨±ê×¼×´¿ö£©ÈçÏÂ±í£º
¢ñ | ¢ò | ¢ó | ¢ô | |
ÑÎËáÒºµÄÌå»ý£¨mL£© | 30 | 30 | 30 | 30 |
ÑùÆ·£¨g£© | 3.32 | 4.15 | 5.81 | 7.47 |
¶þÑõ»¯Ì¼µÄÌå»ý£¨mL£© | 672 | 840 | 896 | 672 |
£¨1£©Óɵڢñ×éÊý¾ÝÖеÄCO2Ìå»ýÓëÑùÆ·ÖÊÁ¿Ö®±È£¬¿ÉÒÔÍƲâÓÃ2.49gÑùÆ·½øÐÐͬÑùµÄʵÑéʱ£¬²úÉúCO2_________mL£¨±ê×¼×´¿ö£©¡£
£¨2£©ÁíÈ¡3.32gÌìÈ»¼îÑùÆ·ÓÚ300¡æ¼ÓÈÈ·Ö½âÖÁÍêÈ«£¨300¡æʱNaCO3²»·Ö½â£©£¬²úÉúCO2112mL£¨±ê×¼×´¿ö£©ºÍË®0.45g£¬¼ÆË㲢ȷ¶¨¸ÃÌìÈ»¼îµÄ»¯Ñ§Ê½¡£
£¨3£©ÒÑÖªNa2CO3ºÍHCL£¨aq£©µÄ·´Ó¦·ÖÏÂÁÐÁ½²½½øÐУº
Na2CO3+HCL¡úNaCL+NaHCO3
Na2CO3+HCL¡úNaCL+CO2¡ü+H2O
£¨4£©ÒÀ¾ÝÉϱíËùÁÐÊý¾ÝÒÔ¼°ÌìÈ»¼îµÄ»¯Ñ§Ê½£¬ÌÖÂÛ²¢È·¶¨ÉÏÊöʵÑéÖÐCO2£¨±ê×¼×´¿ö£©Ìå»ýV£¨mL£©ÓëÑùÆ·ÖÊÁ¿W£¨g£©Ö®¼äµÄ¹Øϵʽ¡£