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In this video I'm going to go through is how to do a titration and also the calculations that are involved in a common titration. The one that I'm going to do is between sodium hydroxide and acetic acid and vinegar. Faith is super important, so make sure that you have your hair pulled back. You have goggles on if you're required to wear gloves that you put those on at this point before you start. If you don't wear gloves, make sure that if you get an acid or base on your skin that you go wash it in the sink with copious amounts of water. Last, you want to make sure that you have jewelry or anything that's dangling that that's removed before you get started. Before I show you how to do a titration, let's go through a few things. First number one. If you cleaned and filled your burette using a funnel, make sure you remove that and put that aside. In the burette goes the standard solution or the one you're standardizing, it's called the tight trend. For mine it's sodium hydroxide that I know the concentration. In the erlenmeyer. Flask it goes the. Solution you're testing or the solid you're testing for mine. I'm going to try to find the concentration of acetic acid and vinegar. I would measure the volume of that vinegar before I start put it into the flask. I could use a graduated cylinder that's really accurate, or a graduated pipette to measure the. Volume of my vinegar. Or you could have used a balance to measure a solid, but maybe a solid acid that would go in the early Mayer flask, and typically you'll even add some water. The next thing is to add an indicator that's appropriate for your titration. For mine, I have a strong base sodium hydroxide with a weak acid, vinegar, or acetic acid, and then phenolphthalein is the appropriate indicator for this titration. Last but not least, take your White Paper, put it behind your burette. Read the volume at eye level. Record it in your data table as your initial volume. Make sure it's got 2 decimal places and then milliliters as a unit. Once you've done that, you are ready to go. When you first start your titration, make sure that you hold maybe the burette with one hand and put your other hand on the stopcock. You'll turn it to the parallel position and the solution that is the standard or the tight Trent is going to be coming out through the tip. Add a little bit and stop because you don't know where the endpoint is. You'll see a flash of pink color. And then when. You stir it that will go. Away, try to avoid hitting the tip. Of the burette add a little bit more. And if you're going to do your first titration slowly, you won't want to go too quickly, because you won't know where the end point is the first time, so you'll want to add a little bit, swirl it, and if you have a lab partner, your lab partner can swirl the Earl Meyer Flask while you are adding the base. Or in this case the type Trent and you're going to continue this. Process until you start to see that pink color, in this case with vinegar with phenolphthalein as your indicator persist for a little bit longer, so once you start to see that pink color persist, you'll want to slow down. Another technique that helps when you get closer to the end point is to do a 180 degree turn on. The stopcock and stop. And swirl it so that you can see that that pink color is persisting longer. This will allow you to add in very small amounts of solution at a time instead of just leaving that. Stop caught completely. Open like that and maybe possibly. Missing the endpoint. As you're running your titration and you're putting more of your solution that you know the concentration of the titrant into the solution that you do not know the concentration of or what the identity is, the analyte. Make sure that you rinse down the inside of this early Meyer flask with distilled water. As long as you've measured the volume of your unknown or the mass, you should be able to add distilled water anytime. During this titration. Once you start to get really close to the end point and again, you'll see that by just a small amount of color persisting a lot. Longer is 2. Instead of doing a 180. To try to. Allow there just to be one drop coming. Through the burette tip so you'll take and you'll usually. Want to hold with one? Hand very slowly. Turn that stopcock so that you are only allowing out one drop.