a)Mg+H2SO4--->MgSO4 +H2
b) Ta có
n\(_{Mg}=\frac{12}{24}=0,5\left(mol\right)\)
Theo pthh
n\(_{H2SO4}=n_{Mg}=0,5\left(mol\right)\)
C\(_{M\left(H2SO4\right)}=\frac{0,5}{0,1}=5\left(M\right)\)
H2SO4 +2KOH--->K2SO4+2H2O
Theo pthh
n\(_{KOH}=2n_{H2SO4}=1\left(mol\right)\)
V\(_{KOH}=\frac{1}{2}=0,5\left(l\right)\)
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