根據(jù)C（H+）=6.4mol/L 得：C(H2SO4)=1/2C(H+)=3.2mol/L
以下均依據(jù)此公式：已知某溶液的密度p,溶質(zhì)質(zhì)量分?jǐn)?shù)w%,溶質(zhì)的摩爾質(zhì)量M
C=溶質(zhì)物質(zhì)的量/溶液體積
=（溶質(zhì)質(zhì)量/溶質(zhì)摩爾質(zhì)量）/（溶液的質(zhì)量/溶液密度）
溶液質(zhì)量*質(zhì)量分?jǐn)?shù)=溶質(zhì)質(zhì)量
則 m質(zhì)=m液*w%
C=（m液*w%/M）/（m液/p)=pw%/M
p的單位是g/ml應(yīng)該化為g/L
C=1000pw%/M
因為稀硫酸的物質(zhì)的量濃度是3.2g/mol
3.2g/mol=(1000*1.19g/ml*w%)/98g/mol
w%=26.35%