Write the reaction equation: K2CO3-KOH-K2ZnO2-KNO3

To carry out the above chain of transformations, it is necessary to carry out the following reactions:

We take potassium carbonate and add barium hydroxide, as a result of the reaction, potassium hydroxide and barium carbonate are formed.

K2CO3 + Ba (OH) 2 = 2 KOH + BaCO3
The second reaction in the chain: we add zinc oxide to potassium hydroxide, as a result of the reaction, a substance such as potassium zincate and water is formed. This reaction takes place by heating.

2 KOH + ZnO = H2O + K2ZnO2
And the last reaction in the above chain is to add nitric acid to potassium zincate, as a result of the reaction water, potassium nitrate and zinc nitrate are formed.

K2ZnO2 + 4 HNO3 = 2 H2O + Zn (NO3) 2 + 2 KNO3.