A là dung dịch H2SO4, B là dung dịch NaOH. Trộn A với B theo tỷ lệ VA: VB = 3:2 thì được dung dịch X có chứa A dư. Trung hòa 1 lít X cần 40 gam dung dịch KOH 28%. Mặt khác nếu Trộn A với B theo tỷ lệ VA: VB = 2:3 thì được dung dịch Y có chứa B dư. Trung hòa 1 lít dung dịch Y cần 29,2 gam dung dịch HCl 25% . Tính nồng độ mol của A và B ?

Các câu hỏi liên quan

1. The boy to…………….I lent my money is poor. * 1 điểm A. that B. who C. whom D. B and C 2. The knife………………….we cut bread is very sharp. * 1 điểm A. with that B. which C. with which D. that 3. Cathy is trustworthy. She’s a person upon …………………you can always depend. * 1 điểm A. who B. whom C. that D. x 4. Your career should focus on a field…………..you are genuinely interested. * 1 điểm A. on which B. in which C. which D. that 5. You gave me precious help……….I am extremely grateful. * 1 điểm A. to which B. for that C. to that D. for which 6. She has two sons. Both of…………………work abroad * 1 điểm A. who B. whom C. them D. people 7. I met the waiters, several of……………..are university students. * 1 điểm A. them B. who C. that D. whom 8. I bought 20 roses, three…………..were destroyed before I came home. * 1 điểm A. of them B. among them C. among which D. of which 9. John, ………that his girlfriend went out with another guy, decided to say good bye to her. * 1 điểm A. believed B. believing C. to believe D. believe 10. It is estimated that no more than 200 Siberian tigers………………in the wild. * 1 điểm A. lived B. leaving C. living D. having left 11. The little girl ………………..I borrowed this pen has gone. * 1 điểm A. whose B. from who C. from that D. from whom 12. In the middle of the village, there is a well from ____ the villagers take water to drink. * 1 điểm A. that B. which C. whom D. who