ÌâÄ¿ÄÚÈÝ
С¼ÑÔÚʵÑéÊÒÖз¢ÏÖһƿŨÁòËᣨ±êÇ©ÉϱêÃ÷ÖÊÁ¿·ÖÊýԼΪ96¡«98%£©£¬ÎªÁ˲ⶨ¸ÃŨÁòËáŨ¶ÈÊÇ·ñ·¢Éú±ä»¯£¬Ð¡¼ÑÈ¡ÁË20gÖÊÁ¿·ÖÊýΪ4%µÄNaOHÈÜÒº¼ÓÈëµ½ÉÕ±ÖУ¬µÎÈëÊÊÁ¿·Ó̪£¬ÈÜÒº±äºì£¬ËæºóС¼ÑÏòÉÕ±ÖÐÂýÂý¼ÓÈë¸ÃŨÁòËᣬ²¢²»¶Ï½Á°è£¬´ýÈÜҺǡºÃ±äΪÎÞɫʱ£¬ÁòËáÓëÇâÑõ»¯ÄÆÇ¡ºÃÍêÈ«·´Ó¦£¬´Ë¹ý³ÌÖй²ÏûºÄÁòËá1.4g£®Çó£º
£¨1£©Çó¸ÃÁòËáÖÐÈÜÖʵÄÖÊÁ¿·ÖÊý£»
£¨2£©Ð¡¼Ñ½«²â¶¨½á¹ûÓëÁòËáÊÔ¼ÁÆ¿±êÇ©ÉϵÄÐÅÏ¢½øÐжԱȣ¬·¢ÏÖ±êÇ©ÉÏÈÜÖʵÄÖÊÁ¿·ÖÊýÓëʵ¼Ê²âµÃµÄÖµ²»·û£¨ÊµÑé¹ý³ÌÎÞÎ󣩣¬ÄãÈÏΪÔÒò¿ÉÄÜÊÇ £®
£¨1£©Çó¸ÃÁòËáÖÐÈÜÖʵÄÖÊÁ¿·ÖÊý£»
£¨2£©Ð¡¼Ñ½«²â¶¨½á¹ûÓëÁòËáÊÔ¼ÁÆ¿±êÇ©ÉϵÄÐÅÏ¢½øÐжԱȣ¬·¢ÏÖ±êÇ©ÉÏÈÜÖʵÄÖÊÁ¿·ÖÊýÓëʵ¼Ê²âµÃµÄÖµ²»·û£¨ÊµÑé¹ý³ÌÎÞÎ󣩣¬ÄãÈÏΪÔÒò¿ÉÄÜÊÇ
¿¼µã£º¸ù¾Ý»¯Ñ§·´Ó¦·½³ÌʽµÄ¼ÆËã,ÓйØÈÜÖÊÖÊÁ¿·ÖÊýµÄ¼òµ¥¼ÆËã
רÌ⣺ÈÜÖÊÖÊÁ¿·ÖÊýÓ뻯ѧ·½³ÌʽÏà½áºÏµÄ¼ÆËã
·ÖÎö£º¸ù¾ÝÇâÑõ»¯ÄÆÈÜÒºµÄÖÊÁ¿¡¢ÈÜÖÊÖÊÁ¿·ÖÊý¿ÉÒÔ¼ÆËã1.4gŨÁòËáÖÐÁòËáµÄÖÊÁ¿£¬½øÒ»²½¿ÉÒÔ¼ÆËã¸ÃÁòËáÖÐÈÜÖʵÄÖÊÁ¿·ÖÊý£»
ŨÁòËá¾ßÓÐÎüË®ÐÔ£¬Äܹ»ÎüÊÕ¿ÕÆøÖеÄË®ÕôÆø£®
ŨÁòËá¾ßÓÐÎüË®ÐÔ£¬Äܹ»ÎüÊÕ¿ÕÆøÖеÄË®ÕôÆø£®
½â´ð£º½â£º£¨1£©Éè1.4gŨÁòËáÖÐÁòËáµÄÖÊÁ¿Îªx£¬
2NaOH+H2SO4¨TNa2SO4+2H2O£¬
80 98
20g¡Á4% x
=
£¬
x=0.98g£¬
¸ÃÁòËáÖÐÈÜÖʵÄÖÊÁ¿·ÖÊýΪ£º
¡Á100%=70%£¬
´ð£º¸ÃÁòËáÖÐÈÜÖʵÄÖÊÁ¿·ÖÊýΪ70%£®
£¨2£©±êÇ©ÉÏÈÜÖʵÄÖÊÁ¿·ÖÊýÓëʵ¼Ê²âµÃµÄÖµ²»·û£¬ÔÒò¿ÉÄÜÊÇŨÁòËáÎüÊÕÁË¿ÕÆøÖеÄË®£¬´Ó¶øµ¼ÖÂÖÊÁ¿·ÖÊý½µµÍ£®
¹ÊÌŨÁòËáÎüÊÕÁË¿ÕÆøÖеÄË®£®
2NaOH+H2SO4¨TNa2SO4+2H2O£¬
80 98
20g¡Á4% x
80 |
20g¡Á4% |
98 |
x |
x=0.98g£¬
¸ÃÁòËáÖÐÈÜÖʵÄÖÊÁ¿·ÖÊýΪ£º
0.98g |
1.4g |
´ð£º¸ÃÁòËáÖÐÈÜÖʵÄÖÊÁ¿·ÖÊýΪ70%£®
£¨2£©±êÇ©ÉÏÈÜÖʵÄÖÊÁ¿·ÖÊýÓëʵ¼Ê²âµÃµÄÖµ²»·û£¬ÔÒò¿ÉÄÜÊÇŨÁòËáÎüÊÕÁË¿ÕÆøÖеÄË®£¬´Ó¶øµ¼ÖÂÖÊÁ¿·ÖÊý½µµÍ£®
¹ÊÌŨÁòËáÎüÊÕÁË¿ÕÆøÖеÄË®£®
µãÆÀ£º±¾ÌâÖ÷Òª¿¼²éѧÉúÔËÓüÙÉè·¨ºÍ»¯Ñ§·½³Ìʽ½øÐмÆËãºÍÍƶϵÄÄÜÁ¦£¬¼ÆËãʱҪעÒâ¹æ·¶ÐÔºÍ׼ȷÐÔ£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
Èçͼʾ¶¼ÊÇ´íÎóµÄʵÑé²Ù×÷£¬²úÉúµÄ²»Á¼ºó¹ûÓëÑ¡Ïî±í´ï²»ÏàÒ»ÖµÄÊÇ£¨¡¡¡¡£©
A¡¢ ±êÇ©ÊÜËð |
B¡¢ ²»»á²úÉúÑõÆø |
C¡¢ µÆÄھƾ«È¼ÉÕ |
D¡¢ ¶ÁÊý´íÎó |