Bài 1:
\(a,\left(1\right)SO_3+H_2O\rightarrow H_2SO_4\\ \left(2\right)2NaOH+H_2SO_4\rightarrow Na_2SO_4+2H_2O\\\left(3\right) Na_2SO_4+BaCl_2\rightarrow BaSO_4\downarrow+2NaCl\\ b,\left(1\right)2SO_2+O_2⇌\left(V_2O_5,t^o\right)2SO_3\\ \left(2\right)SO_3+H_2O\rightarrow H_2SO_4\\ \left(3\right)H_2SO_4+CuO\rightarrow CuSO_4+H_2O\)
Câu 2:
\(n_{Al}=\dfrac{5,4}{27}=0,2\left(mol\right)\\ 2Al+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2\\ 0,2...............0,3............0,1...........0,3\left(mol\right)\\ a,V_{H_2\left(đktc\right)}=0,3.22,4=6,72\left(l\right)\\ b,m_{muối}=m_{Al_2\left(SO_4\right)_3}=0,1.342=34,2\left(g\right)\)
