硫酸镁样品0.9045g,用0.05120mol/LEDTA溶液滴定,消耗20.50
题型:单项选择题
问题:
硫酸镁样品0.9045g,用0.05120mol/LEDTA溶液滴定,消耗20.50ml,样品中含MgSO{.D}4•7H{.D}2O为()。(=246.47)
A.20.40%
B.28.60%
C.30.21%
D.40.32%
硫酸镁样品0.9045g,用0.05120mol/LEDTA溶液滴定,消耗20.50ml,样品中含MgSO{.D}4•7H{.D}2O为()。(=246.47)
A.20.40%
B.28.60%
C.30.21%
D.40.32%