Question

a solution is made by dissolving 35.5 g of ba(no₂)₂ in 500.0 ml of water.
as no₂⁻ is a base, write the basic equilibrium equation that exists in solution

Explanation:

When \(NO_2^-\) acts as a base in water, it accepts a proton (\(H^+\)) from water. According to the Bronsted - Lowry concept of acids and bases, a base is a proton acceptor. Water (\(H_2O\)) can act as an acid (proton donor) in this case. The reaction reaches an equilibrium state.

Answer:

\(NO_{2}^{-}(aq)+H_{2}O(l)
ightleftharpoons HNO_{2}(aq)+OH^{-}(aq)\)