2Al +3H2SO4 = Al2(SO4)3 + 3H2
m(H2SO4) = 200*0.025 = 5г
n(Al)= m(Al) / M(Al) = 13.5/27=0.5 моль
n(H2SO4)= m(H2SO4) / M(H2SO4) = 5/98=0.05 моль
H2SO4-в недостатке
n(H2SO4)=n((H2)=0.05 моль
V(H2)= 0.05*22.4=1.12 л
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2Al +3H2SO4 = Al2(SO4)3 + 3H2
m(H2SO4) = 200*0.025 = 5г
n(Al)= m(Al) / M(Al) = 13.5/27=0.5 моль
n(H2SO4)= m(H2SO4) / M(H2SO4) = 5/98=0.05 моль
H2SO4-в недостатке
n(H2SO4)=n((H2)=0.05 моль
V(H2)= 0.05*22.4=1.12 л