Question

balance (𝐾+HO–)(𝑎𝑞) + (CO2+ 2𝑁𝑂−) → 𝐾+CO 2/3–

+ H2O 

Answer 1

The reaction taking place is given as,

=> OH^- + CO₂ -------> CO₃^2- + H₂O

 In the above reaction, we can see that we have 2 H in RHS. Hence making it 2 in LHS also.

=> 2 OH^- + CO₂ -------> CO₃^2- + H₂O

Since now both, the number of atoms of each element and total charge in each side of the reaction is same.

Hence the reaction is now balanced.

Hence the balanced reaction is,

=> 2 OH^- + CO₂ -------> CO₃^2- + H₂O