2020 100
1 H2NSO
3H
[CONH
22] SO
3
1
CONH
22s+SO
3gH
2NCONHSO
3Hs H0
H
2NCONHSO
3H+H
2SO
42H2NSO
3H+CO
2
7580 80
____________
2 10%12% ____________
3 7.920g l000mL 25.00mL
2mL 0.2mol?L -1 0.08000mol?L -
1NaNO2 NaNO2 25.00mL N2NaNO2
N
2
4 NaOH
NaNO2 ____________
2XYZW 10 W XYZ
1 W + X + H 2O
XA
________ a________________________
W WCln _________ (
)_____________________________________________________
W
_____________________________________________________
2 10 mLpH= a Y pH V Y
__________