A.c(Na+) =2c(A2-) =" 0.2" mol/L |
B.c(OH-) = c(H+) + c(HA-) |
C.c(Na+) + c(H+) = c(OH-) + c(HA-) + 2c(A2-) |
D.c(Na+) =" 2c" (A2-) + 2c (HA-) |
A. HX>HY>HZ | B.HY>HX>HZ |
C. HZ>HY>HX | D.HZ>HX>HY |
A.NH4Cl | B.NH4HSO4 | C.CH3COONH4 | D.NH4HCO3 |
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