Importance of Stoppering the Flask of NaOH Solution

Why is it important to stopper the flask of NaOH solution? Select all that apply.

A. To prevent the NaOH solution from splashing out of the flask
B. To maintain the accuracy of the experiment
C. To regulate the temperature of the solution
D. To prevent the formation of sodium carbonate

Answer:

The stopper can prevent the NaOH solution from splashing out

Explanation: It is important to stopper the flask of NaOH because:

• NaOH can react with carbon dioxide in the air, forming sodium carbonate, which can affect the accuracy of the experiment.
• NaOH can absorb water from the air, which can also affect the accuracy of the experiment.
• NaOH can release heat when it dissolves in water, and the stopper can prevent the heat from escaping, ensuring that the temperature of the solution remains constant.
• The stopper can prevent the NaOH solution from splashing out of the flask and potentially causing injury or damage.