H2SO3 + 2NaOH → Na2SO3 + 2H2O
mH2SO3=82u
mNa2SO3=126u
82u H2SO3 --- 126u Na2SO3
16,4g H2SO3 ---- x
x=25,2g
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H2SO3 + 2NaOH → Na2SO3 + 2H2O
mH2SO3=82u
mNa2SO3=126u
82u H2SO3 --- 126u Na2SO3
16,4g H2SO3 ---- x
x=25,2g