Good day learners! This is Easy Engineering. This time we are going to talk about “Quantifying Acid and Base Reactions by Titration”.

One famous laboratory method is titration.
Chemist use this method to quantify the unknown concentration of the solution by reacting it with solution of known concentration. In an acid-base titration, the acid may be the solution with known concentration and reacts it with base of unknown concentration to determine its concentration or vice versa.

Titration is done just like this.
Suppose you have a known concentration of NaOH and you want to determine the unknown concentration of HCl so you do titration.
You put the HCl solution of volume 50 mL in an Erlenmeyer flask. And you fill the burette with NaOH solution up to the zero mark.
You need an indicator called Phenolphthalein and put 3 drops to the Erlenmeyer flask. The purpose of the indicator is for us to know the endpoint.

Now you start your titration. Several times later, you notice that there is a temporary color light pink change when the NaOH solution drops. This means that we are now going to reach the endpoint. The endpoint is a permanent color change from colorless to light pink. When you put more NaOH, exceeding the needed NaOH for the endpoint, then your solution is now overrun.

Watch the video to find out more.

*Enjoy this fun and educational video from Easy Engineering

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