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Sodium monohydrogen phosphate Na2HP04-12H20 (18 g) is dissolved in a mixture of perchloric acid (73 mL, 11.7 F) and water (20 mL). The solution is cooled to -10 OC. Then a solution of sodium molybdate Na2Mo04.2H20 (108 g) in water (200 mL) is added dropwise to the above solution kept at -10 OC. The resulting solutionis pale yellow.
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Originally posted by qfw_68 at 2011-04-06 20:43:33:
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zhihua123321

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Originally posted by ÖìСÃ÷1985 at 2011-04-06 15:16:03:
Sodium monohydrogen phosphate Na2HP04-12H20 (18 g) is dissolved in a mixture of perchloric acid (73 mL, 11.7 F) and water (20 mL). The solution is cooled to -10 OC. Then a solution of sodium molybd ...

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Nomatterhowyoufeel,getup,dressupandshowup!
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ÖìСÃ÷1985(½ð±Ò+8, ²©Ñ§EPI+1): 4 2011-04-25 16:54:01
ÒýÓûØÌû:
Originally posted by ÖìСÃ÷1985 at 2011-04-06 15:16:03:
Sodium monohydrogen phosphate Na2HP04-12H20 (18 g) is dissolved in a mixture of perchloric acid (73 mL, 11.7 F) and water (20 mL). The solution is cooled to -10 OC. Then a solution of sodium molybd ...

ÕâÀïµÄ73ml 11.7FÊÇÖ¸ÔÚ»ªÊÏ11.7¶ÈϵÄ73ml°É£¬ÒòΪÀÏÃÀÓеÄʱºò»¹ÊÇÓûªÊ϶ȵġ£
4Â¥2011-04-06 16:57:46
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