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2008上海理综化学第9题
B.1L2mol/L的MgCl2溶液中含Mg2+数为2NA
为甚末不对?/
人气:429 ℃ 时间:2020-10-01 22:38:15
解答
错,因为镁离子会水解
Mg2+ + 2H2O = Mg(OH)2 (胶体) + 2H+
所以镁离子个数少于2NA.
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