写出下列质子条件式(1)c(mol/L)K2HPO4溶液(2)a(mol/L)NH3+b(mol/L)NH4Cl溶液
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用HCl中和Na2CO3溶液分别至pH=10.5和pH=7.0时,溶液中各有哪些组分?其主要组分是什么?H2CO3的Ka1=4.2×10-7,Ka2=5.6×10-11
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