Elect the false statement. Which of the given statements is not a reason why reactions are performed under reflux? Refluxing allows thermally unstable reactants to react faster without decomposition. Refluxing prevents the loss of solvent. Refluxing increases the reaction rate. Refluxing allows the reaction to proceed under stable, controlled conditions for long periods of time.

Refluxing allows thermally unstable reactants to react faster without decomposition.

Explanation:

Reflux is an experimental laboratory technique, used to produce heating reactions that take place at temperatures higher than room temperature and where it is better to maintain a constant volume in the reaction. By means of this mechanism, it is possible to avoid losing solvent in the course of the process, and therefore, without releasing it into the atmosphere. This is used to heat mixtures for a long time at a certain temperature. As the temperature increases, the reactant particles collide more times and, because they have more energy, there are more particles that exceed the activation energy, which leads to more effective collisions and a higher reaction speed.

The false statement is : "Refluxing increases the reaction rate."

Explanation:

The main purpose of refluxing a solution is to heat a solution in a controlled manner at a constant temperature.

During refluxing, the solvent is boiled and the solvent vapor is condensed so that all of the solvent runs back into the reaction flask.

The main difference between reflux and distillation is that reflux method is used to complete a certain chemical reaction whereas distillation is used to separate components in a mixture.

Refluxing is not a factor affecting the rate of chemical reaction.