ÌâÄ¿ÄÚÈÝ
½«20gÓÉNaClºÍCaCl2×é³ÉµÄ¹ÌÌå»ìºÏÎÈÜÓÚË®Åä³É50gÈÜÒº£¬ÏòËùµÃµ½µÄ»ìºÏÈÜÒºÖÐÖðµÎ¼ÓÈëÒ»¶¨ÖÊÁ¿·ÖÊýµÄNa2CO3ÈÜÒº£¬¼ÓÈëNa2CO3ÈÜÒºµÄÖÊÁ¿ÓëËùµÃ³ÁµíµÄÖÊÁ¿¹ØϵÈçÏÂ±í£º
£¨1£©xµÄֵΪ
£¨2£©ÇóËù¼ÓNa2CO3ÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿·ÖÊý£®
£¨3£©»³ö²úÉú³ÁµíÓëËù¼ÓNa2CO3ÈÜÒºÖÊÁ¿¹ØϵµÄÇúÏßͼ£®
Na2CO3ÈÜÒºµÄÖÊÁ¿/g | 20 | 40 | 60 | 80 | 100 |
Éú³É³ÁµíµÄÖÊÁ¿/g | 4 | 8 | x | 10 | 10 |
10
10
£®£¨2£©ÇóËù¼ÓNa2CO3ÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿·ÖÊý£®
£¨3£©»³ö²úÉú³ÁµíÓëËù¼ÓNa2CO3ÈÜÒºÖÊÁ¿¹ØϵµÄÇúÏßͼ£®
·ÖÎö£º£¨1£©¸ù¾ÝʵÑéÊý¾Ý£¬¼ÓÈë20g̼ËáÄÆÈÜÒºÍêÈ«·´Ó¦¿ÉÉú³É³ÁµíÖÊÁ¿Îª4g£¬¼ÓÈë80g̼ËáÄÆÈÜҺʱÉú³É³ÁµíµÄÖÊÁ¿Îª10g£¬¿ÉÅжϱíÖÐmµÄÖµ£»
£¨2£©¸ù¾ÝʵÑéÊý¾Ý£¬¼ÓÈë20g̼ËáÄÆÈÜÒºÍêÈ«·´Ó¦¿ÉÉú³É³ÁµíÖÊÁ¿Îª4g£¬¸ù¾Ý̼ËáÄÆÓëÂÈ»¯¸Æ·´Ó¦µÄ»¯Ñ§·½³Ìʽ£¬¿ÉÓÉÉú³É³Áµí̼Ëá¸ÆµÄÖÊÁ¿¼ÆËãNa2CO3µÄÖÊÁ¿·ÖÊý£»
£¨3£©¸ù¾Ýͼ±íÖеÄÊý¾Ý½øÐÐÃèµãÁ¬Ïß¿ÉÒÔÍê³É×÷ͼ£®
£¨2£©¸ù¾ÝʵÑéÊý¾Ý£¬¼ÓÈë20g̼ËáÄÆÈÜÒºÍêÈ«·´Ó¦¿ÉÉú³É³ÁµíÖÊÁ¿Îª4g£¬¸ù¾Ý̼ËáÄÆÓëÂÈ»¯¸Æ·´Ó¦µÄ»¯Ñ§·½³Ìʽ£¬¿ÉÓÉÉú³É³Áµí̼Ëá¸ÆµÄÖÊÁ¿¼ÆËãNa2CO3µÄÖÊÁ¿·ÖÊý£»
£¨3£©¸ù¾Ýͼ±íÖеÄÊý¾Ý½øÐÐÃèµãÁ¬Ïß¿ÉÒÔÍê³É×÷ͼ£®
½â´ð£º½â£º£¨1£©·ÖÎöʵÑéÊý¾Ý¿ÉÖª£¬¼ÓÈë20g̼ËáÄÆÈÜÒºÍêÈ«·´Ó¦¿ÉÉú³É³ÁµíÖÊÁ¿Îª4g£¬¼ÓÈë80g̼ËáÄÆÈÜҺʱÉú³É³ÁµíµÄÖÊÁ¿Îª10g£¬¿ÉÒÔÖªµÀÔÚ¼ÓÈë̼ËáÄÆÈÜÒºÖÁ60gʱ²úÉú³ÁµíµÄÖÊÁ¿Ò²Îª10g£¬ËùÒÔxµÄֵΪ10£»
£¨2£©¸ù¾ÝʵÑéÊý¾Ý£¬¼ÓÈë20g̼ËáÄÆÈÜÒºÍêÈ«·´Ó¦¿ÉÉú³É³ÁµíÖÊÁ¿Îª4g£¬
ÉèÉú³É4g³ÁµíÐèNa2CO3ÖÊÁ¿Îªx
CaCl2+Na2CO3¨TCaCO3¡ý+2NaCl
106 100
x 4g
=
½âµÃ£ºx=4.24g
ËùÒÔ̼ËáÄƵÄÖÊÁ¿·ÖÊýÊÇ£º
¡Á100%=21.2%
´ð£ºÔ»ìºÏÎïÖÐ̼ËáÄƵÄÖÊÁ¿·ÖÊýÊÇ21.2%£®
£¨3£©¶Ô±í¸ñÖÐÊý¾Ý½øÐÐÃèµãÁ¬Ïß¿ÉÒÔ»³ö²úÉú³ÁµíÓëËù¼ÓNa2CO3ÈÜÒºÖÊÁ¿¹ØϵµÄÇúÏßͼ£®
¹Ê´ð°¸Îª£º
£¨1£©10£»
£¨2£©21.2%£»
£¨3£©
£¨2£©¸ù¾ÝʵÑéÊý¾Ý£¬¼ÓÈë20g̼ËáÄÆÈÜÒºÍêÈ«·´Ó¦¿ÉÉú³É³ÁµíÖÊÁ¿Îª4g£¬
ÉèÉú³É4g³ÁµíÐèNa2CO3ÖÊÁ¿Îªx
CaCl2+Na2CO3¨TCaCO3¡ý+2NaCl
106 100
x 4g
106 |
100 |
x |
4g |
½âµÃ£ºx=4.24g
ËùÒÔ̼ËáÄƵÄÖÊÁ¿·ÖÊýÊÇ£º
4.24g |
20g |
´ð£ºÔ»ìºÏÎïÖÐ̼ËáÄƵÄÖÊÁ¿·ÖÊýÊÇ21.2%£®
£¨3£©¶Ô±í¸ñÖÐÊý¾Ý½øÐÐÃèµãÁ¬Ïß¿ÉÒÔ»³ö²úÉú³ÁµíÓëËù¼ÓNa2CO3ÈÜÒºÖÊÁ¿¹ØϵµÄÇúÏßͼ£®
¹Ê´ð°¸Îª£º
£¨1£©10£»
£¨2£©21.2%£»
£¨3£©
µãÆÀ£º¸ù¾ÝʵÑéÊý¾Ý±íÖС°¼ÓÈë̼ËáÄÆÈÜÒºÖÊÁ¿¡±Óë¡°Éú³ÉµÄ³ÁµíµÄÖÊÁ¿¡±µÄ¹Øϵ£¬·ÖÎö·´Ó¦½øÐÐÇé¿ö£¬¿¼²é·ÖÎöʵÑéÊý¾Ý½â¾öÎÊÌâµÄÄÜÁ¦£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
½«20gÓÉNaClºÍCaCl2×é³ÉµÄ¹ÌÌå»ìºÏÎÈÜÓÚË®Åä³É50gÈÜÒº£¬ÏòËùµÃµ½µÄ»ìºÏÈÜÒºÖÐÖðµÎ¼ÓÈëÒ»¶¨ÖÊÁ¿·ÖÊýµÄNa2CO3ÈÜÒº£¬¼ÓÈëNa2CO3ÈÜÒºµÄÖÊÁ¿ÓëËùµÃ³ÁµíµÄÖÊÁ¿¹ØϵÈçÏÂ±í£º
Na2CO3ÈÜÒºµÄÖÊÁ¿/g | 20 | 40 | 60 | 80 | 100 |
Éú³É³ÁµíµÄÖÊÁ¿/g | 4 | 8 | x | 10 | 10 |
£¨2£©ÇóËù¼ÓNa2CO3ÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿·ÖÊý£®
£¨3£©»³ö²úÉú³ÁµíÓëËù¼ÓNa2CO3ÈÜÒºÖÊÁ¿¹ØϵµÄÇúÏßͼ£®
½«20gÓÉNaClºÍCaCl2×é³ÉµÄ¹ÌÌå»ìºÏÎÈÜÓÚË®Åä³É50gÈÜÒº£¬ÏòËùµÃµ½µÄ»ìºÏÈÜÒºÖÐÖðµÎ¼ÓÈëÒ»¶¨ÖÊÁ¿·ÖÊýµÄNa2CO3ÈÜÒº£¬¼ÓÈëNa2CO3ÈÜÒºµÄÖÊÁ¿ÓëËùµÃ³ÁµíµÄÖÊÁ¿¹ØϵÈçÏÂ±í£º
£¨1£©xµÄֵΪ______£®
£¨2£©ÇóËù¼ÓNa2CO3ÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿·ÖÊý£®
£¨3£©»³ö²úÉú³ÁµíÓëËù¼ÓNa2CO3ÈÜÒºÖÊÁ¿¹ØϵµÄÇúÏßͼ£®
Na2CO3ÈÜÒºµÄÖÊÁ¿/g | 20 | 40 | 60 | 80 | 100 |
Éú³É³ÁµíµÄÖÊÁ¿/g | 4 | 8 | x | 10 | 10 |
£¨2£©ÇóËù¼ÓNa2CO3ÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿·ÖÊý£®
£¨3£©»³ö²úÉú³ÁµíÓëËù¼ÓNa2CO3ÈÜÒºÖÊÁ¿¹ØϵµÄÇúÏßͼ£®