What does it mean to standardize the naoh solution why can the molarity of the naoh solution not be determined accurately?

- To set the actual or exact concentration of sodium hydroxide.

- It is hygroscopic.

Explanation:

Hello,

Standardization is a procedure in experimental chemistry to know the actual concentration of a solution, in this case, sodium hydroxide. Such process is carried out by titrating the solution of sodium hydroxide with acid potassium phthalate.

On the other hand, the molarity of sodium hydroxide is not determined accurately since it is a highly hygroscopic material, it means that it includes the water in its structure, therefore the determined molarity will not be accurate since there will be an amount of water included into the sodium hydroxide's exact amount.

Best regards.