精密称取苯巴比妥0.1901g,依法用硝酸银滴定液(0.1008mol/L)滴定,消耗8.01ml,每1ml硝酸银滴定液(0.1nol/L)相当于23.22mg的苯巴比妥,计算含量( )
A.99.8% B.94.4% C.97.8% D.100.2% E.98.6%正确答案E
精密称取苯巴比妥0.1901g,依法用硝酸银滴定液(0.1008mol/L)滴定,消耗8.01ml,每1ml硝酸银滴定液(0.1nol/L)相当于23.22mg的苯巴比妥,计算含量( )
A.99.8% B.94.4% C.97.8% D.100.2% E.98.6%正确答案E