单项选择题
A.1mol/L的H2SO4 B.2mol/L的H2SO4 C.纯水 D.0.1mol/L的H2SO4
A.(BH3-bh3)/12 B.(BH2-bh2)/6 C.(BH3-bh3)/(6H) D.(BH3-bh3)/(6h)