Question

ÔÚij·´Ó¦ÌåϵÖдæÔÚÁùÖÖÎïÖÊ£ºCr³⁺¡¢S₂O₈^2£­¡¢Cr₂O₇^2£­¡¢H⁺¡¢H₂OºÍSO₄^2£­¡£ÒÑÖªÔڸ÷´Ó¦ÖÐÑõ»¯·´Ó¦Ö»ÓÐCr³⁺¡úCr₂O₇^2£­£¬·´Ó¦¹ý³ÌÖÐÐèÒªAg⁺×÷´ß»¯¼Á£¬²¢¼ÓÈÈ¡£Çë»Ø´ðÏÂÁÐÎÊÌ⣺

   £¨1£©ÒÑÖªS₂O₈^2£­Àë×ÓÖдæÔÚÒ»¸ö¹ýÑõ¼ü£¨£­O£­O£­£©£¬ÔòS₂O₈^2£­Àë×ÓÖÐÁòÔªËصĻ¯ºÏ¼ÛΪ__________¼Û¡£

   £¨2£©Ð´³ö¸Ã·´Ó¦ÌåϵÖз¢Éú·´Ó¦µÄÀë×Ó·½³Ìʽ£º_______________________________¡£

   £¨3£©´ß»¯¼ÁÍùÍù²Î¼Ó·´Ó¦£¬¸Ä±ä·´Ó¦Í¾¾¶¡£ÓÃÁ½¸öÀë×Ó·½³Ìʽ±íʾAg⁺µÄ´ß»¯¹ý³Ì£º____________________________£»________________________¡£

   £¨4£©Èô½«ÉÏÊö·´Ó¦Éè¼Æ³ÉÒ»¸öÔ­µç³Ø£¬ÓÃʯī×÷µç¼«£¬ÔòÆ为¼«·´Ó¦Ê½Îª£º_____________________£¬Õý¼«·´Ó¦Ê½Îª£º____________________________¡£

Answer 1

£¨1£©+6£¨2·Ö£©  £¨2£©2Cr³⁺+3S₂O₈^2£­+7H₂OCr₂O₇^2£­+6SO₄^2£­+14H⁺£¨3·Ö£©

   £¨3£©2Cr³⁺+6Ag⁺+7H₂O=Cr₂O₇^2£­+6Ag¡ý+14H⁺£¨2·Ö£© 2Ag+S₂O₈^2£­=2Ag⁺+2SO₄^2£­£¨2·Ö£©

   £¨4£©2Cr³⁺+7H₂O£­6e^£­= Cr₂O₇^2£­+14H⁺£¨3·Ö£©     3S₂O₈^2£­+6e^£­=6SO₄^2£­£¨3·Ö£©

½âÎö£º£¨1£©¹ýÑõ¼üÖеÄÁ½¸öÑõÔ­×Ó¾ùΪ£­1¼Û£¬ÆäËûÑõÔ­×Ó¾ùΪ£­2¼Û¡£¾Ý´Ë¿É¼ÆËã³öS₂O₈^2£­Àë×ÓÖÐÁòÔªËصĻ¯ºÏ¼ÛΪ+6¼Û¡££¨2£©¸ù¾Ý»¯ºÏ¼ÛÉý½µÏàµÈºÍµçºÉÊغ㼴¿ÉÍê³É¡£

   £¨3£©¸ù¾Ý´ß»¯¼ÁµÄ¸ÅÄAg⁺µÄ´ß»¯¹ý³ÌÊÇ£ºAg⁺ÏÈÓëCr³⁺·´Ó¦Éú³ÉAgºÍCr₂O₇^2£­£¬Éú³ÉµÄAgÔÙÓëS₂O₈^2£­·´Ó¦Éú³ÉAg⁺ºÍSO₄^2£­¡£

   £¨4£©¸º¼«·¢ÉúÑõ»¯·´Ó¦£¬ÊÇCr³⁺·Åµç£»Õý¼«·¢Éú»¹Ô­·´Ó¦£¬ÊÇS₂O₈^2£­·Åµç¡£