• 2021-04-14
    从下列总蒽醌的乙醚溶液中,用冷5%的Na2CO3水溶液萃取,碱水层的成分是()。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201907/c5da5b7988454139a7ce768af9316749.png