When potassium carbonate (K₂CO₃) dissolves in water, it dissociates into its constituent ions. The dissociation can be represented by the following chemical equation:

$2_{}{3}_{}\to 2{+}^{}+3_{2-}^{}\backslash text\{K\}\_2\backslash text\{CO\}\_3\; \backslash rightarrow\; 2\backslash text\{K\}^+\; +\; \backslash text\{CO\}\_3^\{2-\}$

$$K2​CO3​→2K++CO32−​

Thus, the ions present in a solution of potassium carbonate (K₂CO₃) are:

1. Potassium ions (${+}^{}\backslash text\{K\}^+$K+)
2. Carbonate ions ($3_{2-}^{}\backslash text\{CO\}\_3^\{2-\}$CO32−​)