Precipitation Reactions and Net Ionic Equations - Chemistry

[@TheOrganicChemistryTutor]

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@@TheOrganicChemistryTutor Why is it Pb 2+ and not Pb 4+ if on the chem table it say it has a 4+ or 4-

[@fanaticflame6946]

Its a transition metal, so they generally have different ions (depending on which given one) In the question, he used Pb(NO3)2, tracing back on the criss-cross method, that shows that the lead (Pb)charge used in that reaction would be +2, If it was Pb(NO3)4 then the lead (Pb) charged used would be Pb+4 @@marlenegarcia6811 😀

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2:54 for those of you looking specifically for Precipitation Reactions :D

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[@AtillaAltunbayrak]

Very helpful video, helped me understand a lot of important details about the precipitation reaction before an important exam. Thank you!

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thank you so much with explainig this. I had trouble understanding how to make reactions and now I know

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Hello, how do I know if a precipitation forms or not? how do i know which if the precipitate?

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[@vqxm7]

i have a question someone please answer why did he leave 2AgCl in the products at 4:52? why didn't you separate it and write the charge like you did with ca(no3)2?

[@neptune6619]

I have the same question

[@quesiachagas5446]

why you did not put the subscript on cl2? AgCL2

[@Beennnzzzzooooo]

Thanks helped out a lot!

[@kevinmason9592]

Confusion: at 10:16 you say that Pb has to have a +2 charge because there are 2 NO3's which make a -2 charge. So you're manipulating the charge of the PB to match the polyatomic ion. However, if I look at a periodic table, I see Pb being in the column that is + or minus - 4. So my question is, why don't we manipulate the charge of the polyatomic ion to match the charge of the lead, and five the NO3 a -2 charge?

[@mikuculus3720]

Pb has multiple oxidation states because it’s a transitioning metal but No3 is at a constant state of -. So we add more No3 to even it out.

[@陈冠廷-j9j]

Hello, how do you determine the state of a new combined ion? I am just confused about whether this new ion is aqueous or solid or liquid or gas? Thank you!

[@mrfresssssh]

look up the solubility rules for liquid/solid

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predict the product balance the equation and write the total and net ionic equation

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[@downtownduffy9869]

in the first question i don't understand why you combined NO3 and Ca together. Shouldnt Ca be combining with Ag?

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It’s spelled “sense”, not since. You’re welcome!

[@poolubillus8331]

writing the total ionic equation why do you leave the AgCl as it is? why dont you break it down? thanks you're a great help

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pool ubillus because silver doesn't dissolve in chlorides

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lista xx wrong and wrong, stop pulling facts from your ass folks. You don't split anything unless it's (aq) AgCl is a solid

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[@qoaeramv]

Why do you leave the PbBr2 as it is and not seperate them?

[@KWANELEMPATANE]

Can I ask why didn't you consider that 2 of chlorine when trying to find the products ?

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youre a god

[@Chrisjones-zr7lr]

How do you know each nitrate has a +1 to get a +2 charge from Pb? 6:30

[@hetalraiththa1127]

are double displacement and precipitation rection same??

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Yes he said it in the beginning

[@cierraharwart]

this was very helpful! thank you!

[@10ayesha03]

What's the purpose of "cross-swap", and when is it necessary?

[@5kunk157h35h17]

It just makes it simpler to see how many molecules are needed for each. If the former has +1 and the latter -2, you need two of the former to stabilize with one of the latter. It's not necessary but could be used to double check that your answer is right. That's what i think at least.