Tutorial Titration of Hydrochloric Acid and Sodium Hydroxide

In this tutorial I set up a burette and use a pipette to load 10 cm3 of a 2 Molar solution of Hydrochloric acid into a conical flask. Then I fill a burette with an unknown concentration of Sodium Hydroxide. I then titrate the sodium Hydroxide against the known concentration of Hydrochloric acid, using Phenolphthalein as an indicator.
Finally I go through the calculation to work out the concentration of the unknown Sodium Hydroxide.

[@cyclops1257]

Thank you very much, you are so kind for going out of your way to make this video. It helps so much!

[@Tchaikovsky391]

Thank you!

[@jamiejenningsgames3784]

thanks Philip

[@mohitminati9172]

What an explanation! !!

[@HarmonyDazzler]

This was really helpful

[@francesvandermerwe2497]

Thank you this was very helpful. Why did you let a little bit of the sodium hydroxide into the beaker before doing the burette reading?

[@PhilipRussell]

To make sure the burette was completely filled with Alkali. If I hadn't the reading would have been wrong as the first cc would fill up the burette and not go into the acid and neutralise it.

[@ajla1292]

Thank u sir it's really helpful

[@aanjivasu]

Thank you sir

[@latheeflatheef2651]

Thanks

[@charliesykes2762]

Very cool

[@mohammadrafiulalamauntor5165]

thanks for the tutorial

[@PhilipRussell]

You are welcome.

[@HarjitSingh-hm3cb]

Awesome

[@humzaali3026]

Thanks boss

[@jonahbolt9950]

can hydrochloric acid mixed with sodium hydroxide and methyl can it wash away ink

[@user-xo2mj7ps8l]

Thanks alot .. what if we add some water to the solution after is added to the buret? Is that correct in titration method?

[@PhilipRussell]

In a normal titration you would make up the correct concentration first then put it in the Burnett, that way you know the concentration.

[@user-xo2mj7ps8l]

@@PhilipRussell I saw some doctors add water to solution ( water in flask after add sol. also water to buret after add solution!!! Why🤕

[@PhilipRussell]

@@user-xo2mj7ps8l I can tell you that they are diluting the solution but I can't really tell you why. The amount of substance in the burette will stay the same but its concentration will change, this won't make it good for doing calculations..

[@user-xo2mj7ps8l]

@@PhilipRussell 👍🌺

[@Berghiker]

So what was the concentration of the acid in %? How do you convert Mole to %?

[@PhilipRussell]

The mole is the measurement of the amount of substance. So 2M HCl means that there is 2 x 36.5g of HCl in every 1000 cm3. Where did I get 36.5 from? The numbers are from the molecular mass .In this case there is 73 g in every 1000 cm3. The % is 73/1000x100.
Now the problem comes when you work in % that a strength of 7.3% is pretty useless when you want to do chemistry.

[@Berghiker]

@@PhilipRussell So the 73g of HCL is the mass of the liquified HCL gas (without water)? Is that correct?

[@Berghiker]

@@PhilipRussell So 12M HCL would be 43.74% right?

[@PhilipRussell]

@@Berghiker yes

[@PhilipRussell]

@@Berghiker yes

[@zahraalghazwi838]

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