WAEC 2024 Chemistry Practical Qualitative Analysis. (salt analysis)

[@muritalaoyekanmi8249]

Well done sir i learnt alot from thus video sir. I awaits the Biology version of this video series sir🙏🙏🙏

[@TheLogicTutor]

Biology will be posted soon

[@userIkechukwu]

Are you adding K2Cr2O7 directly to the residue? I don't think that I. Correct.. the residue must be dissolved in HNO3 first

[@TheLogicTutor]

Yes it can be dissolved in HNO3.

[@SmilingFieldHockey-em7rm]

Nothing like white solution.
Not suspension but a residue

[@IbrahimnNaziru-wl9hr]

Sir for titration

[@yemycoolz4062]

Weldone sir. But I want you to consider this inference to adding water to C. C aqueous or solution of C contains soluble and insoluble salt rather than saying C contain soluble and insoluble salt since we both salt of IN C are soluble

[@TheLogicTutor]

Watch the video to the end sir

[@TheLogicTutor]

Watch the video to the end sir

[@sedikfaruk1468]

Remember as a student you don't know what these salt are, you will only report what you see. Colorless filtrate and white residue. The correct inference from the observation is soluble and insoluble salts

[@ademimikoimisi2758]

​@@sedikfaruk1468please try and understand his point, we learn everyday.
Inference should be C(aq) or Solution C contains soluble and insoluble salt
Mind you,we get to know the that C dissolves partially in water to give a filtrate and residue i.e after the salt has been dissolved in water (Solution formed)

[@TiwaaMcAsh-jx3py]

You kept most part of the process off the camera so observation were not clear made

[@TheLogicTutor]

Thanks for the comments 👍
Improvement will be made on other videos

[@Nicx-c6g]

Pls is this the exact question for this yrs salt analysis practical

[@JankeyTouray-f9s]

My question too 😢

[@TheLogicTutor]

No

[@Nicx-c6g]

Thanks

[@constanceosagie2005]

How true sir?

[@ChidimmaNgene-zy6gz]

thanks

[@TheLogicTutor]

You're welcome!

[@userIkechukwu]

There's nothing like a white solution and C doesn't contain soluble and insoluble salts. That explanation is wrong

[@TheLogicTutor]

Pb(NO3)2 + Na2CO3--------- PbCO3 + 2NaNO3

[@TheLogicTutor]

Na3CO3 (sodium carbonate) reacts with Pb(NO3)2 (lead(II) nitrate) to form a precipitate of PbCO3 (lead(II) carbonate) and sodium nitrate:
Na3CO3 (aq) + Pb(NO3)2 (aq) → PbCO3 (s) + 2NaNO3 (aq)
This reaction is an example of a precipitation reaction, where two solutions containing ions combine to form an insoluble solid (the precipitate).
Note: (aq) indicates the species is in aqueous solution, and (s) indicates the species is a solid.

[@TheLogicTutor]

So you need to correct your impression. Forget the fact that the two salts are soluble.

[@TheLogicTutor]

So the explanation is not wrong...