Bài 14 : Có một dung dịch chứa đồng thời HCl và H2SO4. Cho 200 g dung dịch đó tác dụng với BaCl2 dư thì tạo thành 46,6 g kết tủa. Lọc bỏ kết tủa. Để trung hoà nước lọc thu được ta phải dùng 500ml dung dịch NaOH 1,6M. Tính nồng độ phần trăm mỗi axit trong dung dịch ban đầu.

Các câu hỏi liên quan

Put the verbs in the brackets into correct form of Simple Future/Be going to/Present Continuous.( và giải thích vì sao chọn ) 1. I (be) ................................... on holiday in August. 2. Please hurry up! We (not have) ................................... time for the meal. 3. We (see) ................................... her off at the station at seven. 4. I don’t think the exam (be) ................................... difficult. 5. I (call) ................................... you tomorrow. 6. The international conference (open) ................................... next week. 7. There’s a postbox over there. I (post) ................................... these letters. 8. You (open) ................................... the door? 9. You are so busy, so I (peel) ................................... the potatoes. 10. I’m going out. I (post) ................................... these letters. 11. You (come) ................................... to lunch? 12. I (punish) ................................... you if you do that again. 13. How pale that girl is! I’m sure she (faint) ................................... 14. Tom (not pass) ................................... the examination. He hasn’t worked hard enough. 15. You still haven’t cleaned your room, Tom. / OK, I (do) ................................... it tomorrow. 16. Look out! We (crash) ...................................! 17. Charles (have) ................................... an accident if he drives like that. 18. My brother (come) ................................... to see me on the weekend. 19. We (have) ................................... a party on Sunday. Would you like to come? 20. We (go) ................................... to the movie tonight.