Viết các phương trình

----- Nội dung ảnh -----
* Phương trình khối:
\[
\text{K}_2\text{PO}_4 + \text{H}_2\text{PO}_4 \rightarrow 3\text{K}_3\text{PO}_4
\]
\[
\text{K}_3\text{PO}_4 + \text{H}_2\text{O} \rightarrow 2\text{K}_H\text{PO}_4
\]

\[
\text{Zn} \rightarrow \text{Zn(NO}_3\text{)}_2
\]
\[
\text{Zn} + \text{Na}_2\text{CO}_3 \rightarrow \text{Na}_2\text{ZnO}_2
\]
\[
\text{CO}_2 \rightarrow \text{KHCO}_3
\]
\[
\text{KHCO}_3 + \text{CaCO}_3 + \text{KOH} + \text{H}_2\text{O}
\]

A → B + D + E → G

\[
\text{CaCl}_2 \rightarrow \text{Ca(OH)}_2
\]
\[
\text{CaCO}_3 \uparrow
\]
\[
\text{Clora với Ca(NO}_3\text{)}_2
\]

(1)
\[
\text{Al}_2\text{O}_3
\]
(12)
\[
\text{Al}_2\text{SO}_4 \rightarrow \text{Al} (11)
\]
\[
\text{AlCl}_3 \rightarrow \text{Al(NO}_3\text{)}_3
\]
(10)
\[
\text{NaAlO}_2
\]
(7)
\[
\text{Al}_2\text{O}_3
\]