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阿Q吧 > 硝酸汞和碘化钾反应,向反应产物中再滴加氢氧化钾和氨水,反应产物是什么

硝酸汞和碘化钾反应,向反应产物中再滴加氢氧化钾和氨水,反应产物是什么

2025-03-16 12:25:29

推荐回答（1个）

回答1：

这个是由奈斯勒试剂检验NH4+的反应。
1、Hg2+ + 4I- = [HgI4 ]2-
2、奈斯勒试剂：
鉴定NH4+的特效试剂，主要成分是K2[HgI4]，在碱性溶液中作用时析出黄色或红棕色沉淀。NH4+ +2[HgI4)]2- + 4OH- = [Hg2O(NH2)]I + 7I- + 3H2O

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