ÌâÄ¿ÄÚÈÝ

¡¾ÌâÄ¿¡¿ÔÚÒ»¶¨Î¶ÈÏ£¬±ù´×Ëá¼ÓˮϡÊ͹ý³ÌÖУ¬ÈÜÒºµÄµ¼µçÄÜÁ¦IËæ¼ÓÈëË®µÄÌå»ýV±ä»¯µÄÇúÏßÈçͼËùʾ¡£Çë»Ø´ð£º

£¨1£©¡°O¡±µãµ¼µçÄÜÁ¦ÎªOµÄÀíÓÉÊÇ £»

£¨2£©a¡¢b¡¢cÈýµãÈÜÒºÖÐc£¨H+£©ÓÉСµ½´óµÄ˳ÐòΪ £»

£¨3£©a¡¢b¡¢cÈýµãÖд×ËáµçÀë¶È×î´óµÄÊÇ £»Ë®µçÀë³Ì¶È×î´óµÄÊÇ £»

£¨4£©ÈôʹcµãÈÜÒºµÄc£¨CH3COO-£©Ìá¸ß£¬ÔÚÈçÏ´ëÊ©ÖпɲÉÈ¡ £¨Ìî±êºÅ£©¡£

A£®¼ÓÈÈ

B£®¼ÓÑÎËá

C£®¼Ó±ù´×Ëá

D£®¼ÓÈë¹ÌÌåKOH

E£®¼ÓË®

F£®¼Ó¹ÌÌåCH3COONa

G£®¼ÓZnÁ£

¡¾´ð°¸¡¿£¨1£©±ù´×ËáÒÔ·Ö×ÓÐÎʽ´æÔÚ£¬²»µçÀ룬ÎÞ×ÔÓÉÒƶ¯µÄÀë×Ó£¬ËùÒÔ²»µ¼µç

£¨2£© c<a<b £¨3£© c c £¨4£© ACDFG

¡¾½âÎö¡¿

ÊÔÌâ·ÖÎö£º£¨1£©ÈÜÒºµÄµ¼µçÐÔÓëÀë×ÓŨ¶ÈÓйأ¬Àë×ÓŨ¶ÈÔ½´ó£¬µ¼µçÐÔԽǿ£¬±ù´×ËáÖÐûÓÐ×ÔÓÉÒƶ¯µÄÀë×Ó£¬ËùÒÔ±ù´×Ëá²»µ¼µç£»

£¨2£©µ¼µçÄÜÁ¦Ô½Ç¿£¬Àë×ÓŨ¶ÈÔ½´ó£¬ÇâÀë×ÓŨ¶ÈÔ½´ó£¬pHԽС£¬Ôòa¡¢b¡¢cÈýµãÈÜÒºµÄpHΪb£¼a£¼c£¬ÇâÀë×ÓŨ¶ÈÓÉСµ½´óµÄ˳ÐòΪcab£»

£¨3£©ÈÜҺԽϡ£¬Ô½´Ù½ø´×ËáµçÀ룬CH3COOHµÄµçÀë³Ì¶È×î´óµÄÊÇc£»ÈÜÒºÖÐÇâÀë×ÓŨ¶ÈԽС£¬¶ÔË®µÄµçÀëÒÖÖƳ̶ÈԽС£¬cµãÇâÀë×ÓŨ¶È×îС£¬Ë®µÄµçÀë³Ì¶È×î´ó£»

£¨4£©ÒªÊ¹´×Ëá¸ùÀë×ÓŨ¶ÈÔö´ó£¬¿ÉÒÔ²ÉÓüÓÈÈ¡¢¼ÓÈ뺬Óд×Ëá¸ùÀë×ÓµÄÎïÖÊ¡¢¼ÓÈëºÍÇâÀë×Ó·´Ó¦µÄÎïÖÊ£¬A£®¼ÓÈÈ´Ù½ø´×ËáµçÀ룬ÔòÈÜÒºÖд×Ëá¸ùÀë×ÓŨ¶ÈÔö´ó£¬AÕýÈ·£»B£®¼ÓÑÎËáÒÖÖÆ´×ËáµçÀ룬B´íÎó£»C¡¢¼Ó±ù´×Ëᣬ´×Ëá¸ùŨ¶ÈÔö´ó£¬CÕýÈ·£»D¡¢¼ÓNaOH¹ÌÌ壬ÇâÑõ»¯ÄƺÍÇâÀë×Ó·´Ó¦´Ù½ø´×ËáµçÀ룬ËùÒÔ´×Ëá¸ùÀë×ÓŨ¶ÈÔö´ó£¬DÕýÈ·£»E£®¼ÓˮϡÊÍÄÜ´Ù½ø´×ËáµçÀ룬µ«´×Ëá¸ùÀë×ÓŨ¶È¼õС£¬E´íÎó£»F£®¼Ó¹ÌÌåCH3COONa£¬ÄÜÒÖÖÆ´×ËáµçÀ룬µ«´×ËáÄƵçÀë³öµÄ´×Ëá¸ùÀë×Ó´óÓÚÒÖÖÆ´×ËáµçÀë³öµÄ´×Ëá¸ùÀë×Ó£¬ËùÒÔ´×Ëá¸ùÀë×ÓŨ¶ÈÔö´ó£¬FÕýÈ·£»G£®¼ÓÈëпÁ££¬ºÍÇâÀë×Ó·´Ó¦£¬´Ù½ø´×ËáµçÀ룬ËùÒÔ´×Ëá¸ùÀë×ÓŨ¶ÈÔö´ó£¬GÕýÈ·£»´ð°¸Ñ¡ACDFG£»

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

¡¾ÌâÄ¿¡¿Áò´úÁòËáÄÆÓÖÃû¡°´óËÕ´ò¡±£¬ÈÜÒº¾ßÓÐÈõ¼îÐԺͽÏÇ¿µÄ»¹Ô­ÐÔ£¬ÊÇÃÞÖ¯ÎïƯ°×ºóµÄÍÑÂȼÁ£¬¶¨Á¿·ÖÎöÖеĻ¹Ô­¼Á¡£Áò´úÁòËáÄÆ£¨Na2S2O3£©¿ÉÓÉÑÇÁòËáÄƺÍÁò·Ûͨ¹ý»¯ºÏ·´Ó¦ÖƵã¬×°ÖÃÈçͼ1Ëùʾ¡£

ÒÑÖª£ºNa2S2O3ÔÚËáÐÔÈÜÒºÖв»ÄÜÎȶ¨´æÔÚ£¬ÓйØÎïÖʵÄÈܽâ¶ÈÇúÏßÈçͼ2Ëùʾ£¬

£¨1£©Na2S2O3¡¤5H2OµÄÖƱ¸£º

²½Öè1£ºÈçͼÁ¬½ÓºÃ×°Öúó£¨Î´×°Ò©Æ·£©£¬¼ì²éA¡¢C×°ÖÃÆøÃÜÐԵIJÙ×÷ÊÇ ¡£

²½Öè2£º¼ÓÈëÒ©Æ·£¬´ò¿ªK1¡¢¹Ø±ÕK2£¬¼ÓÈÈ¡£×°ÖÃB¡¢DÖеÄÒ©Æ·¿ÉÑ¡ÓÃÏÂÁÐÎïÖÊÖÐµÄ £¨Ìî±àºÅ£©¡£

A£®NaOHÈÜÒº B£®Å¨H2SO4 C£®ËáÐÔKMnO4ÈÜÒº D£®±¥ºÍNaHCO3ÈÜÒº

²½Öè3£ºCÖлìºÏÒº±»ÆøÁ÷½Á¶¯£¬·´Ó¦Ò»¶Îʱ¼äºó£¬Áò·ÛµÄÁ¿Öð½¥¼õÉÙ¡£

²½Öè4£º¹ýÂËCÖеĻìºÏÒº£¬½«ÂËÒº¾­¹ý¼ÓÈÈŨËõ£¬³ÃÈȹýÂË£¬ÔÙ½«ÂËÒº ¡¢¹ýÂË¡¢Ï´µÓ¡¢ºæ¸É£¬µÃµ½²úÆ·¡£

£¨2£©Na2S2O3ÐÔÖʵļìÑ飺Ïò×ãÁ¿µÄÐÂÖÆÂÈË®ÖеμÓÉÙÁ¿Na2S2O3ÈÜÒº£¬ÂÈË®ÑÕÉ«±ädz£¬¼ì²é·´Ó¦ºóÈÜÒºÖк¬ÓÐÁòËá¸ù£¬Ð´³ö¸Ã·´Ó¦µÄ»¯Ñ§·½³Ìʽ ¡£

£¨3£©³£ÓÃNa2S2O3ÈÜÒº²â¶¨·ÏË®ÖÐBa2+Ũ¶È£¬²½ÖèÈçÏ£ºÈ¡·ÏË®25.00 mL£¬¿ØÖÆÊʵ±µÄËá¶È¼ÓÈë×ãÁ¿K2Cr2O7ÈÜÒº£¬µÃBaCrO4³Áµí£»¹ýÂË¡¢Ï´µÓºó£¬ÓÃÊÊÁ¿Ï¡ÑÎËáÈܽ⡣´ËʱCrO42£­È«²¿×ª»¯ÎªCr2O72£­£»ÔÙ¼Ó¹ýÁ¿KIÈÜÒº£¬³ä·Ö·´Ó¦ºó£¬¼ÓÈëµí·ÛÈÜÒº×÷ָʾ¼Á£¬ÓÃ0.010 mol¡¤L£­1µÄNa2S2O3ÈÜÒº½øÐе樣¬·´Ó¦Íêȫʱ£¬ÏûºÄNa2S2O3ÈÜÒº18. 00 mL¡£²¿·Ö·´Ó¦µÄÀë×Ó·½³ÌʽΪ£ºCr2O72£­ + 6 I£­ + 14H+ = 2 Cr3+ + 3 I2 + 7 H2O£»I2 + 2 S2O32£­ = S4O62£­+2I£­¡£Ôò¸Ã·ÏË®ÖÐBa2+µÄÎïÖʵÄÁ¿Å¨¶ÈΪ ¡£

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

¾«Ó¢¼Ò½ÌÍø