CTTQ : A2(CO3)n
A2(CO3)a +2aHCl --> 2ACla + aCO2+aH2O (1)
nA2(CO3)a= \(\dfrac{31,89}{2M_A+60a}\left(mol\right)\)
nCO2=0,3(mol)
theo (1) : nA2(CO3)n=1/a nCO2=0,3/a(mol)
=>\(\dfrac{31,89}{2M_A +60a}=\dfrac{0,3}{a}\)
=>MA\(\approx\)23(g/mol)
=> A:Na => A2(CO3)a : Na2CO3