下列溶液经反应后,溶液内含有0.5mol,NaHCO3和0.5mol,Na2CO3的是()
A,0.5L,1mol/L,NaHCO3加0.5L,0.5mol/L,NaOH
B,0.5L,0.75mol/L,Na2CO3加0.5L,0.5mol/L,HCl
C,0.5L,1mol/L,NaHCO3加0.5L,0.25mol/L,NaOH
D,1L,1mol/L,Na2CO3加1L,0.5mol/L,HCl
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