正确答案: C
除去FeCl2溶液中混有的FeCl3:加入过量铁粉,过滤
题目:下列除去杂质的方法正确的是
解析:CO2可以被澄清石灰水吸收,而CO不可以,故A项错。盐酸可以将BaCO3反应除去,而不能溶解BaSO4,故B项错;C项,2FeCl3 + Fe = 3FeCl2,过量的铁过滤,即可除去,正确;Cu和CuO均可以被HNO3溶解,故D项错。
查看原题查看所有试题
学习资料的答案和解析:
[单选题]
drove
[多选题]71Home can be a great place for children to study. It’s important to provide a workspace of their own where they can read books or just write a letter to their friends.
Attitude Is Everything.
Building a Good Home Learning Environment.
Hold a can-do attitude and your child will follow your example.
解析:71.D 72.F 73.G 74.A 75.E
[单选题]exist
examine
解析:exist读音[iɡ’zist]。而其余选项的 “x”发音/ks/。
[单选题]---Good morning. I've got an appointment with Miss Smith in the PersonnelDepartment.
must
[单选题]下列各项中,能证明基因与染色体具有平行关系的实验是 ( )
摩尔根的果蝇杂交实验
[单选题]下列对文章最后一段内容的理解和推断,准确的一项是
院落组织有主有次,主次分明,错落有致,显示了古代中国人在空间处理上非凡的想象力和创造性。
[多选题]下列哪种藻类无世代交替现象( )。
轮藻
衣藻
解析:AC