试题与答案

将ag含NaOH样品溶解在bmL0.1mol•L-1硫酸中,再加入cmL0.1m

题型:选择题

题目:

将ag含NaOH样品溶解在bmL0.1mol•L-1硫酸中,再加入cmL0.1mol•L-1的氢氧化钡溶液,反应后所得溶液恰好呈中性,则样品中NaOH的纯度是(  )

A.

(b-c)
125a
×100%

B.

b-2c
125a
×100%

C.

b-c
250a
×100%

D.

8b-8c
a×100%

答案:

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参考答案:错

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