a. Axit + bazơ:
NaOH + HCl \(\rightarrow\) NaCl + \(H_2O\)
b. Axit + muối :
\(Na_2CO_3 + 2HCl \rightarrow 2NaCl + H_2O + CO_2 \uparrow\)
c. Kiềm + muối :
\(2NaOH + CuCl_2 \rightarrow 2NaCl + Cu(OH)_2 \downarrow\)
d. Muối + muối :
\(Na_2CO_3 + CaCl_2 \rightarrow 2NaCl + CaCO_3 \downarrow\)
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