C
chungseu
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
bai 1: tron 50ml dung dich {Na}_{2}{CO}_{3} o,2 M voi 100ml dung dich {CaCl}_{2} 0,15 M thu duoc mot luong ket tua dung bang luong ket tua thu duoc khi tron 50ml dung dich {Na}_{2}{CO}_{3} o,2 M voi 100ml dung dich{BaCl}_{2} nong do a(mol/lit). Tim a
Bai 2
ung dich A gom 5 ion {Mg}^{2+},{Ba}^{2+}, {Ca}^{2+}, o,1 mol C{l}^{-}, o,2mol N{O}^{3-}, Them tu tu dung dich {K}_{2}C{O}_{3} 1M vao dung dich A den khi khi duoc luong ket tua lon nhat thi the tich dung dich {K}_{2}C{O}_{3} cho vao la bao nhieu?
Bai 2