Question

¿ÎÍâ»î¶¯Ð¡×éµÄͬѧÔڲⶨÓÉNaClºÍNa₂CO₃ÐγɵĹÌÌå»ìºÏÎï×é³Éʱ£¬½øÐÐÁËÒÔÏÂʵÑ飺ȡ40 g¹ÌÌå»ìºÏÎïÅä³ÉÈÜÒº£¬Æ½¾ù·ÖΪËÄ·Ý£¬È»ºó·Ö±ð¼ÓÈëÒ»¶¨ÖÊÁ¿·ÖÊýµÄCaCl₂ÈÜÒº£¬ÊµÑéÊý¾Ý¼ûÏÂ±í£º

	ʵÑéÒ»	ʵÑé¶þ	ʵÑéÈý	ʵÑéËÄ
Ô­¹ÌÌå»ìºÏÎïÖÊÁ¿	£±£°g	£±£°g	£±£°g	£±£°g
¼ÓÈëCaCl2ÈÜÒºÖÊÁ¿	£±£°g	£²£°g	£³£°g	£´£°g
Éú³ÉµÄ³ÁµíµÄÖÊÁ¿	£²g	£í	£µg	£µg

Çë·ÖÎö±íÖÐÊý¾Ý»Ø´ð²¢¼ÆËã[£¨4£©ÒªÇóд¼ÆËã¹ý³Ì ]

£¨1£©Éú³ÉµÄ³ÁµíÊÇ£¨Ìîд»¯Ñ§Ê½£©         ¡£   £¨2£©10gÔ­¹ÌÌå»ìºÏÎïÅä³ÉµÄÈÜÒººÍ×ãÁ¿CaCl₂ÈÜÒº·´Ó¦£¬×î¶àÉú³É³ÁµíÖÊÁ¿Îª         g¡£

£¨3£©£í=          g¡£

£¨4£©Ô­¹ÌÌå»ìºÏÎïÖÐNaClµÄÖÊÁ¿·ÖÊýÊǶàÉÙ£¿

 

Answer 1

(1)CaCO₃    £¨1·Ö£©        (2)5   £¨1·Ö£©    (3) 4   £¨1·Ö£©

£¨4£©CaCl₂   + Na₂CO₃  =  CaCO₃¡ý + 2NaCl

106      100

 x        5g     ¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­ £¨1·Ö£©

               106        100

x         5g     ¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­ £¨1·Ö£©

x = 5.3g        ¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­ £¨1·Ö£©

¹ÌÌå»ìºÏÎïÖÐNaCl µÄÖÊÁ¿·ÖÊýÊÇ:

       10g- 5.3g

          10g                         ¡­¡­¡­¡­¡­¡­¡­ £¨2·Ö £¬ÁÐʽºÍ½á¹û¸÷1·Ö£©

 

½âÎö:£¨1£©Ö»ÓÐ̼Ëá¸ùÀë×ÓÓë¸ÆÀë×Ó»á²úÉú°×É«³Áµí̼Ëá¸Æ£¬£¨2£©Óɱí¿ÉÖª10gÔ­¹ÌÌå»ìºÏÎïÅä³ÉµÄÈÜÒººÍ×ãÁ¿CaCl₂ÈÜÒº·´Ó¦£¬×î¶àÉú³É³ÁµíÖÊÁ¿Îª5g£¬£¨3£©·ÖÎöʵÑéÊý¾Ý¿ÉÖª£¬Ã¿¼ÓÈë10gÂÈ»¯¸ÆÈÜÒº¿ÉÉú³É2g³Áµí£¬Òò´Ë¼ÓÈë20gÂÈ»¯¸ÆÈÜҺʱ£¬µÃµ½³ÁµíÖÊÁ¿m=2g¡Á =4g£¬£¨4£©¼ÓÈëÂÈ»¯¸ÆÈÜÒºÖÁÍêÈ«·´Ó¦Ê±£¬Éú³É³ÁµíÖÊÁ¿Îª5g£¬¸ù¾Ý̼ËáÄÆÓëÂÈ»¯¸Æ·´Ó¦µÄ»¯Ñ§·½³Ìʽ£¬¿ÉÓÉÉú³É³Áµí̼Ëá¸ÆµÄÖÊÁ¿¼ÆËãÖÐÔ­¹ÌÌå»ìºÏÎïÖÐNa₂CO₃µÄÖÊÁ¿£¬¼´¿ÉÇóµÃÔ­¹ÌÌå»ìºÏÎïÖÐNaClµÄÖÊÁ¿£¬¿ÉÇóµÃÔ­¹ÌÌå»ìºÏÎïÖÐNaClµÄÖÊÁ¿·ÖÊý£®