ÌâÄ¿ÄÚÈÝ

¡¾ÌâÄ¿¡¿Í­ºÏ½ðÊÇÒ»ÖÖ³£ÓõĽðÊô²ÄÁÏ¡£

(1)³àÍ­(Cu2O)ÊÇÎÒ¹ú¹Å´úÖÆÈ¡»ÆÍ­µÄÒ»ÖÖÔ­ÁÏ¡£Cu2OµÄÏà¶Ô·Ö×ÓÖÊÁ¿Îª £¬Cu2OÖÐÍ­ÔªËغÍÑõÔªËصÄÖÊÁ¿±ÈÊÇ ¡£

(2)Óû²â¶¨Ä³Í­Ã¾ºÏ½ðµÄ×é³É(ÆäËûÔªËغöÂÔ²»¼Æ)£¬½øÐÐÈçÏÂʵÑ飺ȡͭþºÏ½ð20g·ÅÈëÉÕ±­£¬½«200gÏ¡ÁòËá·Ö4´Î¼ÓÈëÉÕ±­ÖУ¬³ä·Ö·´Ó¦ºó£¬²âµÃÊ£Óà¹ÌÌåµÄÖÊÁ¿¼Ç¼Èçϱí(Mg+H2SO4=MgSO4+H2¡ü)¡£

´Î Êý

1

2

3

4

¼ÓÈëÏ¡ÁòËáÖÊÁ¿/g

50

50

50

50

Ê£Óà¹ÌÌåÖÊÁ¿/g

17.6

m

13.2

13.2

Çë¼ÆË㣺¢Ù±íÖÐm= g£¬¸ÃͭþºÏ½ðÑùÆ·ÖÐÍ­µÄÖÊÁ¿= ¡£

¢ÚËù¼ÓÏ¡ÁòËáÖÐÈÜÖʵÄÖÊÁ¿·ÖÊý¡£(д³ö¼ÆËã¹ý³Ì)

¡¾´ð°¸¡¿(1)144 8£º1£»(2)¢Ù15.2 13.2 ¢Ú19.6%

¡¾½âÎö¡¿

£¨1£©Cu2OµÄÏà¶Ô·Ö×ÓÖÊÁ¿=64¡Á2+16=144£¬Cu2OÖÐÍ­ÔªËغÍÑõÔªËصÄÖÊÁ¿±È=£¨64¡Á2£©£º16=8:1£»

£¨2£©½â£º¢ÙÓɱí¸ñÐÅÏ¢¿ÉÖª£¬Ã¿¼ÓÈë50gÏ¡ÁòËᣬ¹ÌÌåÖÊÁ¿¼õÉÙ20g-17.6g=2.4g£»µ±µÚ¶þ´Î¼ÓÈë50gÏ¡ÁòËáʱ£¬Ê£Óà¹ÌÌåµÄÖÊÁ¿=17.6g-2.4g=15.2g£»ÓɱíÖÐÊý¾Ý¿ÉÖª£¬µÚÈý´Î¼ÓÈë50gÏ¡ÁòËáʱ£¬¹ÌÌå¼õСµÄÖÊÁ¿Ð¡ÓÚ2.4g£¬ËµÃ÷þÒѾ­ÍêÈ«·´Ó¦£¬Ê£Óà¹ÌÌåµÄÖÊÁ¿¾ÍÊÇÍ­µÄÖÊÁ¿£¬¹Ê¸ÃͭþºÏ½ðÑùÆ·ÖÐÍ­µÄÖÊÁ¿Îª13.2g£»

¢Ú·ÖÎö±íÖÐÊý¾Ý¿ÉÖª,Óë50gÏ¡ÁòËáÍêÈ«·´Ó¦ÏûºÄþµÄÖÊÁ¿Îª2.4g£¬

É裺Óë2.4gþ·´Ó¦µÄÏ¡ÁòËáÖÐÈÜÖʵÄÖÊÁ¿Îªx

x=9.8g

Ï¡ÁòËáÖÐÈÜÖʵÄÖÊÁ¿·ÖÊýΪ:

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

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

¾«Ó¢¼Ò½ÌÍø