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A.c(NO3-)>c(NH4+)>c(H+)>c(OH-)
B.c(NH4+)>c(NO3-)>c(OH-)>c(H+)
C.c(H+)=c(OH-)+c(NH3¡¤H2O)
D.c(NH4+)+c(NH3¡¤H2O)=1.5c(NO3-)

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