网址:http://m.1010jiajiao.com/timu3_id_16312[举报]
BaCl2溶液32.33g与20g稀H2SO4恰好完全反应,滤去溶液里的沉淀后,得到50g盐酸,该盐酸溶液的质量分数为 ( )
A.0.374% B.0.298% C.0.73% D.1.64%