No, the reaction between KCl (potassium chloride) and Na2S (sodium sulfide) will not result in a colored solution. Here's why:

* The reaction: The reaction between KCl and Na2S is a double displacement reaction:

KCl + Na2S → 2NaCl + K2S

* Solubility: Both NaCl (sodium chloride) and K2S (potassium sulfide) are soluble in water. This means they dissociate into their ions when dissolved:

* NaCl → Na+ + Cl-

* K2S → 2K+ + S2-

* Color: The ions formed (Na+, K+, Cl-, and S2-) are colorless in solution. Therefore, the resulting solution will be clear and colorless.

Important Note: While the solution itself is colorless, the sulfide ion (S2-) can react with oxygen in the air to form a slightly yellow-colored polysulfide solution over time. This is a separate reaction, not directly related to the initial reaction between KCl and Na2S.