ÌâÄ¿ÄÚÈÝ
£¨2011?´óÇ죩ʵÑéÊÒÓÐÁ½Æ¿±êÇ©Ä£ºýµÄÈÜÒº£¬·Ö±ðÊÇÈÜÖÊÖÊÁ¿·ÖÊý¾ùΪ8%µÄNaOHºÍKOHÈÜÒº£®ÎªÁ˼ø±ðÕâÁ½Æ¿ÈÜÒº£¬Ê×ÏÈÔÚÕâÁ½¸öÊÔ¼ÁÆ¿ÉÏÌùÉϱêÇ©A¡¢BÒÔʾÇø±ð£¬È»ºóÈ¡A¡¢BÈÜÒº¸÷20¿Ë£¬·Ö±ð¼ÓÈëÉÕ±ÖУ¬ÓÃÈÜÖÊÖÊÁ¿·ÖÊýΪ7.3%µÄÏ¡ÑÎËáÖкͣ®ÏûºÄÑÎËáµÄÖÊÁ¿ÓëÉÕ±ÖÐÈÜÒº×ÜÖÊÁ¿ÈçÏÂͼËùʾ£º
ÒÑÖª£ºP¡¢QÁ½µãÈÜÒº³ÊÖÐÐÔ£¬Ôò£º
£¨1£©ÈÜÒºBµÄÈÜÖÊÊÇ
£¨2£©Çó³öm¡¢nµÄÖµ£¨Ð´³ö¼ÆËã¹ý³Ì£¬²¢±£ÁôһλСÊý£©£®
ÒÑÖª£ºP¡¢QÁ½µãÈÜÒº³ÊÖÐÐÔ£¬Ôò£º
£¨1£©ÈÜÒºBµÄÈÜÖÊÊÇ
NaOH
NaOH
£¨Ð´»¯Ñ§Ê½£©£»£¨2£©Çó³öm¡¢nµÄÖµ£¨Ð´³ö¼ÆËã¹ý³Ì£¬²¢±£ÁôһλСÊý£©£®
·ÖÎö£º¸ù¾ÝÌâÒâ¿ÉÒÔÖªµÀ£º¼ÓÈëÑÎËáºó£¬ÇâÑõ»¯ÄƺͺÍÇâÑõ»¯¼Ø½«»á·Ö±ðºÍÑÎËá·´Ó¦£¬¹Ê¿ÉÒÔ½áºÏËüÃÇ·´Ó¦µÄ»¯Ñ§·½³Ìʽ¼ÆË㣬²¢ÅжÏÈÜÒºAºÍBÖеÄÈÜÖʼ°m¡¢nµÄÖµ£®
½â´ð£º½â£º¸ù¾ÝP¡¢QÁ½µãÈÜÒº³ÊÖÐÐÔ£¬¿ÉÒÔÖªµÀËù¼ÓÈëµÄÑÎËáÓëÇâÑõ»¯ÄƺÍÇâÑõ»¯¼Ø¶¼ÍêÈ«·´Ó¦£¬ÆäÖÐÇâÑõ»¯ÄƵÄÖÊÁ¿Îª£º20g¡Á8%=1.6g£¬ÇâÑõ»¯¼ØµÄÖÊÁ¿Îª£º20g¡Á8%=1.6g£¬¹Ê¿ÉÒÔ¸ù¾ÝËüÃǵÄÖÊÁ¿½áºÏ»¯Ñ§·½³Ìʽ½øÐмÆË㣻
ÉèÇâÑõ»¯ÄÆÍêÈ«·´Ó¦ÏûºÄÑÎËáµÄÖÊÁ¿Îªx£¬
NaOH+HCl¨TNaCl+H2O
40 36.5
1.6g x?7.3%
=
½âµÃ£ºx=20g
ÉèÇâÑõ»¯¼ØÍêÈ«·´Ó¦ÏûºÄÑÎËáµÄÖÊÁ¿Îªy£¬
KOH+HCl¨TKCl+H2O
56 36.5
1.6g y?7.3%
=
½âµÃ£ºy=14.3g
£¨1£©¸ù¾Ý¼ÆËã¿ÉÒÔÖªµÀÇâÑõ»¯ÄÆÈÜÒºÏûºÄÑÎËáµÄÖÊÁ¿Îª20g£¬¹Ê·´Ó¦ºóÈÜÒºµÄÖÊÁ¿Îª20g+20g=40g£¬ÕâÓëÈÜÒºBµÄͼÏàÎǺϣ¬ËùÒÔÈÜÒºBÖеÄÈÜÖÊΪÇâÑõ»¯ÄÆ£»
£¨2£©¸ù¾Ý¼ÆËã¿ÉÒÔÖªµÀÈÜÒºAΪÇâÑõ»¯¼ØÈÜÒº£¬ÏûºÄÑÎËáµÄÖÊÁ¿Îª14.3g¼´m=14.3g£¬n=20g+14.3g=34.3g£»
´ð£º£¨1£©ÈÜÒºBÖеÄÈÜÖÊΪNaOH£»
£¨2£©mµÄֵΪ14.3g£¬nµÄֵΪ34.3g£®
¹Ê´ð°¸Îª£º£¨1£©NaOH£»
£¨2£©m=14.3g£¬n=34.3g£®
ÉèÇâÑõ»¯ÄÆÍêÈ«·´Ó¦ÏûºÄÑÎËáµÄÖÊÁ¿Îªx£¬
NaOH+HCl¨TNaCl+H2O
40 36.5
1.6g x?7.3%
40 |
36.5 |
1.6g |
x?7.3% |
½âµÃ£ºx=20g
ÉèÇâÑõ»¯¼ØÍêÈ«·´Ó¦ÏûºÄÑÎËáµÄÖÊÁ¿Îªy£¬
KOH+HCl¨TKCl+H2O
56 36.5
1.6g y?7.3%
56 |
36.5 |
1.6g |
y?7.3% |
½âµÃ£ºy=14.3g
£¨1£©¸ù¾Ý¼ÆËã¿ÉÒÔÖªµÀÇâÑõ»¯ÄÆÈÜÒºÏûºÄÑÎËáµÄÖÊÁ¿Îª20g£¬¹Ê·´Ó¦ºóÈÜÒºµÄÖÊÁ¿Îª20g+20g=40g£¬ÕâÓëÈÜÒºBµÄͼÏàÎǺϣ¬ËùÒÔÈÜÒºBÖеÄÈÜÖÊΪÇâÑõ»¯ÄÆ£»
£¨2£©¸ù¾Ý¼ÆËã¿ÉÒÔÖªµÀÈÜÒºAΪÇâÑõ»¯¼ØÈÜÒº£¬ÏûºÄÑÎËáµÄÖÊÁ¿Îª14.3g¼´m=14.3g£¬n=20g+14.3g=34.3g£»
´ð£º£¨1£©ÈÜÒºBÖеÄÈÜÖÊΪNaOH£»
£¨2£©mµÄֵΪ14.3g£¬nµÄֵΪ34.3g£®
¹Ê´ð°¸Îª£º£¨1£©NaOH£»
£¨2£©m=14.3g£¬n=34.3g£®
µãÆÀ£ºÊìÁ·ÕÆÎÕÑÎËáºÍ³£¼ûµÄ¼îµÄ·´Ó¦£¬²¢Äܹ»¸ù¾ÝËüÃÇÖ®¼ä·´Ó¦µÄ»¯Ñ§·½³Ìʽ½øÐмÆË㣬¼Çס»¯Ñ§·½³Ìʽ£ºNaOH+HCl¨TNaCl+H2O£»KOH+HCl¨TKCl+H2O£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿