Step 1: Understand the reaction type.
The reaction \( \text{RCOOK} \xrightarrow{\text{Electrolytic}} \text{Br}_2 \) involves the reduction of a carboxylate anion to a hydrocarbon, a reaction that yields good results.
Step 2: Conclusion.
This reaction will give a hydrocarbon product in good yield.
Final Answer:
\[
\boxed{\text{RCOOK} \xrightarrow{\text{Electrolytic}} \text{Br}_2}
\]