View attachment 133147 Giúp mình với ahhhhhhhh
-Từ đồ thị :
+nHCl=y
+0,03=(0,16-y)/3--->y=0,07--->CM<HCl>=0,7M
PTHH:
3NaOH+AlCl3=Al(OH)3+3NaCl
3x---------x--------x
......NaOH+Al(OH)3=NaAlO2+2H2O
(0,15-3x)----(0,15-3x)
---->x-0,15+3x=0,03
---->x=0,045--->CM<AlCl3>=0,45M