ÌâÄ¿ÄÚÈÝ

£¨¼ÆËã½á¹û±£ÁôһλСÊý£©
£¨1£©½«50.0¿Ë²»´¿µÄʳÑÎÑùÆ·£¨ÔÓÖʲ»ÈÜÓÚË®£©·ÅÈë360.0¿ËË®ÖУ¬³ä·Ö½Á°è£¬½«ÑùÆ·ÖеÄÂÈ»¯ÄÆÈ«²¿Èܽâºó¹ýÂË£¨¼ÙÉè²Ù×÷¹ý³ÌÖÐË®·ÖÎÞËðʧ£©£¬È¡ÂËÒº117.0¿Ë£¬ÏòÆäÖмÓÈë×ãÁ¿µÄÏõËáÒøÈÜÒº£¬µÃµ½28.7¿Ë°×É«³Áµí£¬ÊÔÇó£º
¢ÙËùÈ¡µÄ117.0¿ËÂËÒºÖÐÈÜÖʵÄÖÊÁ¿·ÖÊý£®
¢ÚʳÑÎÑùÆ·ÖÐÂÈ»¯ÄƵÄÖÊÁ¿·ÖÊý£®
£¨2£©½«26.0¿Ë²»´¿µÄÂÈ»¯±µ·ÛÄ©£¨ÔÓÖʲ»ÈÜÓÚˮҲ²»²Î¼Ó·´Ó¦£©·ÅÈëÒ»¶¨Á¿ÁòËáÄÆÈÜÒºÖУ¬Ç¡ºÃÍêÈ«·´Ó¦£¬·´Ó¦ºóµÃµ½ÈÜÖÊÖÊÁ¿·ÖÊýΪ1-2.0%µÄÈÜÒº97.5¿Ë£¬¼ÆË㣺
¢Ù·´Ó¦ºóÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿ÊǶàÉÙ¿Ë£¿
¢Ú²»´¿µÄÂÈ»¯±µ·ÛÄ©Öк¬ÂÈ»¯±µµÄÖÊÁ¿·ÖÊýÊǶàÉÙ£¿
¢Û·´Ó¦Ç°ÁòËáÄÆÈÜÒºµÄÖÊÁ¿ÊǶàÉÙ¿Ë£¿
£¨1£©¢ÙÉè²ÎÓë·´Ó¦µÄNaClµÄÖÊÁ¿Îªx£¬
AgNO3+NaCl¨TAgCl¡ý+NaNO3
58.5 143.5
x 28.7g
¡à
58.5
x
=
143.5
28.7g

½âÖ®µÃ£ºx=11.7g£¬
ËùÈ¡µÄ117¿ËÂËÒºÖÐÈÜÖʵÄÖÊÁ¿·ÖÊýΪ£º
11.7g
117g
¡Á100%=10%£»
¢ÚÂËÒºµÄ×ÜÖØÁ¿Îª£º360g¡Â£¨1-10%£©=400g£¬
ʳÑÎÑùÆ·ÖÐÂÈ»¯ÄƵÄÖÊÁ¿Îª£º400g¡Á10%=40g£¬
ʳÑÎÑùÆ·ÖÐÂÈ»¯ÄƵÄÖÊÁ¿·ÖÊýΪ£º
40g
50g
¡Á100%=80%£®
´ð£º¢ÙËùÈ¡µÄ117¿ËÂËÒºÖÐÈÜÖʵÄÖÊÁ¿·ÖÊýΪ10%£»
¢ÚʳÑÎÑùÆ·ÖÐÂÈ»¯ÄƵÄÖÊÁ¿·ÖÊýΪ80%£®
£¨2£©¢Ù97.5g¡Á12.0%=11.7g£®
¢ÚÉè»ìºÏÎïÖÐÂÈ»¯±µµÄÖÊÁ¿Îªx£¬Éú³É³ÁµíµÄÖÊÁ¿Îªy£¬
Na2SO4+BaCl2=2NaCl+BaSO4¡ý
208 117 233
x 11.7g y
¡à
208
x
=
117
11.7g
£¬
117
11.7g
=
233
y
£¬
½âÖ®µÃ£ºx=20.8g£¬y=23.3g£¬
»ìºÏÎïÖÐÂÈ»¯±µµÄÖÊÁ¿°Ù·Öº¬Á¿Îª£º
20.8g
26.0g
¡Á100%=80%£®
¢Û·´Ó¦Ç°ÁòËáÄÆÈÜÒºµÄÖÊÁ¿=97.5g+23.3g-11.7g=109.1g£®
´ð£º¢Ù·´Ó¦ºóÈÜÒºÖÐÈÜÖÊÖÊÁ¿Îª11.7g£»
¢Ú»ìºÏÎïÖÐÂÈ»¯±µµÄÖÊÁ¿°Ù·Öº¬Á¿Îª80%£»
¢Û·´Ó¦Ç°ÁòËáÄÆÈÜÒºÖÊÁ¿Îª109.1g£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø