D dangnga New member Xu 0 20/1/12 #1 1 axit co nog do 130% sau khi them nuoc vao nong do dat 98%, cho 1 day Al vao ko thay co htg gj. tiep tuc them nuoc de dung dich co nong do 32% thay day Al cug ko phan ung. axit do la j.
1 axit co nog do 130% sau khi them nuoc vao nong do dat 98%, cho 1 day Al vao ko thay co htg gj. tiep tuc them nuoc de dung dich co nong do 32% thay day Al cug ko phan ung. axit do la j.
D dangnga New member Xu 0 20/1/12 #3 ko pai dau.cac dap an de lua chon nez: A.h3po4 B.hCl C. h2so3 D.h2so4