![]() ![]() The titrating solution reacts with the titrant, and the endpoint of the reaction is monitored in some way. The concentration of the titrant can now be calculated from the amount of titrating solution added, and the ratio of the two chemicals in the chemical equation for the reaction. The hydroxyl ions will react with the hydrogen ions to Titration theory: To measure the acidity of a vinegar solution, we can add enough hydroxyl ions to balance out the added hydrogen ions from the acid. In order for a titration to work, we need three things: 1. a titration solution (contains hydroxyl ions with a precisely known concentration), 2. a method for delivering a precisely measured volume of the titrating solution, and 3. a means of indicating when the endpoint has been reached. ![]() For the titrating solution, we'll use a dilute solution of sodium hydroxide (NaOH). ![]() Sodium hydroxide is a strong base, which means that it dissociates almost completely in water. So for every NaOH molecule that we add to the solution,we can expect to produce a hydroxyl ion.
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