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Date: 9-10-2018
813
Date: 11-1-2019
1035
Date: 11-11-2018
1088
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Ammonia can act as both a base and a ligand. In these cases, it simply acts as a base - removing hydrogen ions from the aqua complex.
In the iron(II) case:
The appearance is just the same as in when you add sodium hydroxide solution. The precipitate again changes color as the iron(II) hydroxide complex is oxidized by the air to iron(III) hydroxide. In the iron(III) case:
The reaction looks just the same as when you add sodium hydroxide solution.
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تقرير أميركي: هكذا "تسرقنا" منصات التواصل الاجتماعي
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علماء: الاحتباس الحراري يزيد نسبة النباتات الضارة في بحيرات القطب الشمالي
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شعبة التوجيه الديني النسويّ تحتفي بذكرى مولد الصادقين (صلوات الله عليهما)
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