B
bacviet_pro
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
cho các dd Ba(OH)2 , NaHCO3, BaCl2 , Ca(HCO3)2 , NaHSO4 , Na2CO3 va Cu(NO3)2 . Khi tron lan voi nhau tung doi mot so cap dd tac dung duoc voi nhau la?( thay co the ghi ro ptpu de em hieu hon duoc khong ạ )