>2 C6H5OH + Na2CO3 → 2 C6H5ONa + H2O + CO2

Explanation

Step 1: Sodium carbonate reacts with water to form sodium hydroxide and carbonic acid.

>Na2CO3 + H2O → 2 NaOH + H2CO3

Step 2: Carbonic acid decomposes to form carbon dioxide and water.

>H2CO3 → CO2 + H2O

Step 3: Sodium hydroxide reacts with phenol to form sodium phenoxide and water.

>NaOH + C6H5OH → C6H5ONa + H2O

The overall reaction is the sum of the three steps:

>2 C6H5OH + Na2CO3 → 2 C6H5ONa + H2O + CO2