\(\text{Nhôm + axit sunfuric }\rightarrow\text{nhôm sunfat + khí hidro}\)
\(\text{2Al + 3H2SO4 }\rightarrow\text{ Al2(SO4)3 + 3H2}\)
Ta có :
\(n_{H2}=\frac{1,5}{2}\text{=0,75 mol}\)
\(\rightarrow\text{nH2SO4=nH2=0,75 mol}\)
\(\rightarrow\text{mH2SO4=0,75.98=73,5 gam}\)