ÌâÄ¿ÄÚÈÝ
£¨6·Ö£©Ä³»¯Ñ§ÐËȤС×飬ÔÚÒ»´Î²éÔÄ ¡°¹ØÓÚÈçºÎÖÎÁÆÈËÌåθËá¹ý¶à¡±µÄ×ÊÁϺ󣬾ö¶¨ÀûÓÃʵÑéÊÒÏà¹ØÒÇÆ÷£¨¸ßÎÂÏû¶¾£©×ÔÖÆСËÕ´òË®£¨NaHCO3Ë®ÈÜÒº£©£¬ÓÃÀ´»º½âθËá¹ý¶àµÄÖ¢×´¡£¾ßÌåÅäÖƲ½Ö裨¾Ò½Éú½¨Ò飩ÈçÏ£º
µÚÒ»²½£º×¼È·³ÆÁ¿8.4gʳƷ¼¶Ð¡ËÕ´ò·ÛÄ©£»µÚ¶þ²½£º½«µÚÒ»²½Ëù³Æ·ÛÄ©Åä³É100gÈÜÒº£»
µÚÈý²½£º½«µÚ¶þ²½ËùµÃÈÜҺȡ³ö10g£¬ÔÙ¼ÓË®ÅäÖƳÉ100gÈÜÒº¼´µÃµ½ÖÎÁÆθËá¹ý¶àµÄ
СËÕ´òË®£¨ÃܶÈΪ1.0g/mL£©¡£
Çë»Ø´ðÏÂÁÐÎÊÌ⣺
£¨1£©µÚÒ»²½Óõ½µÄÖ÷ÒªÒÇÆ÷ÊÇ £»µÚ¶þ²½Ê¹ÓõIJ£Á§ÒÇÆ÷ÓÐ £¨ÖÁÉÙдÁ½ÖÖ£©£»£¨2£©µÚÈý²½ÅäÖÆËùµÃµÄСËÕ´òË®ÖÐNaHCO3µÄÖÊÁ¿·ÖÊýÊÇ £»
£¨3£©Î¸Ëá¹ý¶àÕßÔÚÒ½ÉúµÄÖ¸µ¼Ï£¬Ã¿´ÎºÈ50mLµÚÈý²½ÅäÖÆËùµÃµÄСËÕ´òË®£¬Ò»ÌìÁ½´Î£¬Ôò
Ò»Ìì¿É·´Ó¦µôθҺÖеÄHCl g¡£
µÚÒ»²½£º×¼È·³ÆÁ¿8.4gʳƷ¼¶Ð¡ËÕ´ò·ÛÄ©£»µÚ¶þ²½£º½«µÚÒ»²½Ëù³Æ·ÛÄ©Åä³É100gÈÜÒº£»
µÚÈý²½£º½«µÚ¶þ²½ËùµÃÈÜҺȡ³ö10g£¬ÔÙ¼ÓË®ÅäÖƳÉ100gÈÜÒº¼´µÃµ½ÖÎÁÆθËá¹ý¶àµÄ
СËÕ´òË®£¨ÃܶÈΪ1.0g/mL£©¡£
Çë»Ø´ðÏÂÁÐÎÊÌ⣺
£¨1£©µÚÒ»²½Óõ½µÄÖ÷ÒªÒÇÆ÷ÊÇ £»µÚ¶þ²½Ê¹ÓõIJ£Á§ÒÇÆ÷ÓÐ £¨ÖÁÉÙдÁ½ÖÖ£©£»£¨2£©µÚÈý²½ÅäÖÆËùµÃµÄСËÕ´òË®ÖÐNaHCO3µÄÖÊÁ¿·ÖÊýÊÇ £»
£¨3£©Î¸Ëá¹ý¶àÕßÔÚÒ½ÉúµÄÖ¸µ¼Ï£¬Ã¿´ÎºÈ50mLµÚÈý²½ÅäÖÆËùµÃµÄСËÕ´òË®£¬Ò»ÌìÁ½´Î£¬Ôò
Ò»Ìì¿É·´Ó¦µôθҺÖеÄHCl g¡£
£¨6·Ö£©£¨1£©ÍÐÅÌÌìƽ£¨Ììƽ£© (1·Ö) ²£Á§°ô¡¢ÉÕ±¡¢Á¿Í²£¨ÈÎд2ÖÖ¾ù¿É£¬ÉÙд»òд´í²»µÃ·Ö£¬1·Ö£©
£¨2£©0.84%£¨0.0084£© £¨2·Ö£© £¨3£©0.37£¨0.365£© £¨2·Ö£©¡£
£¨2£©0.84%£¨0.0084£© £¨2·Ö£© £¨3£©0.37£¨0.365£© £¨2·Ö£©¡£
Îö£º£¨1£©¸ù¾ÝÈÜÒºµÄÅäÖÆÑ¡ÔñËùÓÃÒÇÆ÷£»
£¨2£©¸ù¾ÝÈÜÖʵÄÖÊÁ¿·ÖÊý¼ÆË㹫ʽ½øÐнâ´ð£»
£¨3£©¸ù¾ÝСËÕ´òÓëÏ¡ÑÎËá·´Ó¦µÄ»¯Ñ§·½³Ìʽ½â´ð£®
½â´ð£º½â£º£¨1£©³ÆÁ¿ÒªÓõ½ÍÐÅÌÌìƽ£¬ÅäÖÆÈÜÒº»¹ÒªÓõ½ÉÕ±£¬¼ÓËÙÈܽâµÄ²£Á§°ô£¬Á¿È¡Ò»¶¨Á¿ÒºÌåµÄÁ¿Í²£»
¹Ê´ð°¸Îª£ºÍÐÅÌÌìƽ£» ²£Á§°ô¡¢ÉÕ±¡¢Á¿Í²£¨ÈÎд2ÖÖ¼´¿É£©£»
£¨2£©µÚ¶þ²½ËùµÃÈÜÒºÈÜÖÊÖÊÁ¿·ÖÊýÊÇ¡Á100%=8.4%£¬Ð¡ËÕ´òΪ10g¡Á8.4%=0.84g£¬ÈÜÒºÊÇ100g£¬ÈÜÖʵÄÖÊÁ¿·ÖÊý¡Á100%=0.84%£»
¹Ê´ð°¸Îª£º0.84%£»
£¨3£©Ã¿ÌìÉãÈëµÄСËÕ´òµÄÖÊÁ¿50mL¡Á2¡Á1.0g/mL¡Á0.84%=0.84g£®
ÊÇÉè¿É·´Ó¦µôθҺÖеÄHCl µÄÖÊÁ¿ÎªX£®
NaHCO3+HCl=NaCl+H2O+CO2¡ü
84 36.5
0.84g X
=
X=0.365g
¹Ê´ð°¸Îª£º0.365g£®
µãÆÀ£º±¾ÌâÒÔСËÕ´òÖÎÁÆθËá¹ý¶àΪÀý£¬Éè¼ÆʵÑé̽¾¿ÁËÈÜÒºÅäÖÆËùÓõÄÒÇÆ÷£¬ÈÜÖʵÄÖÊÁ¿·ÖÊý¼ÆË㣬¸ù¾Ý·½³ÌʽµÄ¼ÆË㣬Éè¼ÆÐÂÓ±£¬¿¼²éÁËѧÉúµÄÓ¦ÓÃÄÜÁ¦£¬Ìå»áµ½Ñ§Ï°»¯Ñ§µÄʵ¼ÊÒâÒ壮
£¨2£©¸ù¾ÝÈÜÖʵÄÖÊÁ¿·ÖÊý¼ÆË㹫ʽ½øÐнâ´ð£»
£¨3£©¸ù¾ÝСËÕ´òÓëÏ¡ÑÎËá·´Ó¦µÄ»¯Ñ§·½³Ìʽ½â´ð£®
½â´ð£º½â£º£¨1£©³ÆÁ¿ÒªÓõ½ÍÐÅÌÌìƽ£¬ÅäÖÆÈÜÒº»¹ÒªÓõ½ÉÕ±£¬¼ÓËÙÈܽâµÄ²£Á§°ô£¬Á¿È¡Ò»¶¨Á¿ÒºÌåµÄÁ¿Í²£»
¹Ê´ð°¸Îª£ºÍÐÅÌÌìƽ£» ²£Á§°ô¡¢ÉÕ±¡¢Á¿Í²£¨ÈÎд2ÖÖ¼´¿É£©£»
£¨2£©µÚ¶þ²½ËùµÃÈÜÒºÈÜÖÊÖÊÁ¿·ÖÊýÊÇ¡Á100%=8.4%£¬Ð¡ËÕ´òΪ10g¡Á8.4%=0.84g£¬ÈÜÒºÊÇ100g£¬ÈÜÖʵÄÖÊÁ¿·ÖÊý¡Á100%=0.84%£»
¹Ê´ð°¸Îª£º0.84%£»
£¨3£©Ã¿ÌìÉãÈëµÄСËÕ´òµÄÖÊÁ¿50mL¡Á2¡Á1.0g/mL¡Á0.84%=0.84g£®
ÊÇÉè¿É·´Ó¦µôθҺÖеÄHCl µÄÖÊÁ¿ÎªX£®
NaHCO3+HCl=NaCl+H2O+CO2¡ü
84 36.5
0.84g X
=
X=0.365g
¹Ê´ð°¸Îª£º0.365g£®
µãÆÀ£º±¾ÌâÒÔСËÕ´òÖÎÁÆθËá¹ý¶àΪÀý£¬Éè¼ÆʵÑé̽¾¿ÁËÈÜÒºÅäÖÆËùÓõÄÒÇÆ÷£¬ÈÜÖʵÄÖÊÁ¿·ÖÊý¼ÆË㣬¸ù¾Ý·½³ÌʽµÄ¼ÆË㣬Éè¼ÆÐÂÓ±£¬¿¼²éÁËѧÉúµÄÓ¦ÓÃÄÜÁ¦£¬Ìå»áµ½Ñ§Ï°»¯Ñ§µÄʵ¼ÊÒâÒ壮
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿