The compound that makes a nonelectrolyte when dissolved in water is C12H22O11, which is sucrose. Sucrose does not dissociate into ions in solution, so it does not conduct electricity, making it a nonelectrolyte.
The other compounds, H3PO4 (phosphoric acid), H2CO3 (carbonic acid), and Nasodium carbonate), can dissociate into ions in aqueous solution, making them electrolytes.
