ÌâÄ¿ÄÚÈÝ
ÔÚ¡°ºîʽÁªºÏÖƼ¡±µÄ¹¤ÒÕÁ÷³ÌÖУ¬×îºóÒ»²½ÊÇÓüÓÈÈ̼ËáÇâÄƵķ½·¨À´ÖÆÈ¡´¿¼î¡£Ä³´¿¼îÉú²ú³§ÖƵõIJúÆ·Na2CO3ÖлìÓÐÉÙÁ¿NaHCO3¡£ÎªÁ˲ⶨ²úÆ·ÖÐNa2CO3µÄÖÊÁ¿·ÖÊý£¬È¡100g»ìºÏÎï¼ÓÈÈ(2NaHCO3Na2CO3+CO2¡ü+H2O, Na2CO3ÊÜÈȲ»·Ö½â£©£¬·´Ó¦¹ý³ÌÖÐÉú³É¶þÑõ»¯Ì¼ÆøÌåµÄÖÊÁ¿Ó뷴Ӧʱ¼äµÄ¹ØϵÈçͼËùʾ¡£
Çë½â´ðÏÂÁÐÎÊÌ⣺
£¨1£©·´Ó¦¹ý³ÌÖÐÉú³É¶þÑõ»¯Ì¼µÄÖÊÁ¿Îª g
£¨2£©100g»ìºÏÎïÖÐNaHCO3µÄÖÊÁ¿£»
Çë½â´ðÏÂÁÐÎÊÌ⣺
£¨1£©·´Ó¦¹ý³ÌÖÐÉú³É¶þÑõ»¯Ì¼µÄÖÊÁ¿Îª g
£¨2£©100g»ìºÏÎïÖÐNaHCO3µÄÖÊÁ¿£»
£¨1£©0.22 £¨2£©0.84
¸ù¾ÝͼÏó¿ÉÖª·´Ó¦²úÉúµÄ¶þÑõ»¯Ì¼µÄÖÊÁ¿Îª0.22¿Ë£¬¶øÒªÇó³öNaHCO3µÄÖÊÁ¿ºÍNa2CO3µÄÖÊÁ¿·ÖÊý£¬×î¹Ø¼üµÄÊÇÒªÖªµÀÖ»ÓÐNaHCO3¼ÓÈÈʱ»á³öÏÖ¶þÑõ»¯Ì¼ÆøÌ壬ÕâÑùÎÒÃǾͿÉÒÔ¸ù¾Ý¶þÑõ»¯Ì¼µÄÖÊÁ¿Í¨¹ý·½³ÌʽÀ´ÍƵ¼³öNaHCO3µÄÖÊÁ¿
£¨1£©ÓÐͼÏó¿ÉÖª£¬Éú³É¶þÑõ»¯Ì¼µÄÖÊÁ¿Îª0.22g
£¨2£©Éè»ìºÏÎïÖÐNaHCO3µÄÖÊÁ¿Îªx
2NaHCO3Na2CO3+H2O+CO2¡ü
168 44
x 0.22g
168/44=x/0.22g
x=0.84g
£¨1£©ÓÐͼÏó¿ÉÖª£¬Éú³É¶þÑõ»¯Ì¼µÄÖÊÁ¿Îª0.22g
£¨2£©Éè»ìºÏÎïÖÐNaHCO3µÄÖÊÁ¿Îªx
2NaHCO3Na2CO3+H2O+CO2¡ü
168 44
x 0.22g
168/44=x/0.22g
x=0.84g
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿