How do you predict the products of a chemical reaction if you know which type of reaction it is by its reactants

how do you predict the products of a chemical reaction if you know which type of reaction it is by its reactants

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By identifying the type of reaction involved.
k bye

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idk

yeah i mean what do you do after that
like if you know it's a synthesis reaction from 2Mg + O2 how are you supposed to know that the product is 2MgO and not 2MgO2?

byeeeeeeeeeeeeeeeeeeeeeeeee

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i tried that but i still don't get it i have a test tomorrow jfkjdlkfsdjflkdjflsjdjfihehfehfehsjflsefjsl

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something something molar mass of element and number of moles

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It's written in alphabetical order, smooth brian

wtf i thought molar mass was a whole different thing
i know that but why is there only one oxygen in the product when there was two in the reactants?

because the bond between the two oxygens was broken

Number of links blahblahblah chemistry a stupid like u

how do you figure that out

idk its been too long sorry
do your best on the test btw im rooting for you user

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Let’s say it’s a reaction between Magnesium and Oxygen, Mg has a charge of +2 while O has a charge of -2. So the charge will cancel each other out and the final product is MgO. The balanced equation is 2Mg+O2–> 2MgO

thanks anone
oh, this makes sense. so if Mg was +2 and O was -3 then would it be MgO2? or would O have to be -4 to end up with MgO2?

it would be Mg3O2

No. If MG was +2 and O -4 you'd have 2MgO
2 positives charges from the Mg negates the 4 negatives charges of the O

oh yeah you have to make them proportional, thanks
uh are you sure
if +2 and -2 cancel out why would +2 and -4 cancel out as well?

I think he means Mg2O
Also magnesium peroxide can form, I'm not sure whether it has a balanced charge or not

oh ok, i think i get the basics now. so for other stuff like double replacement i guess it would just be the same but with more elements or is there more involved?

in peroxides the oxygen atoms are only 1- instead of 2-
so MgO2 could form as well as MgO, there's probably special bs conditions for it though

can you give an example of a double replacement problem?

Yeah you're right. Haven't done this in ages and I forgot where to put the numbers and stuff

K2CO3 + BaCl2
(the 3 is subscript to only O not CO)

that's a bit trickier, I haven't done that kinda stuff in a long time
I'll have a quick look online to refresh, it's probably got something to do with electronegativity
there could be three products idk

it says the answer is 2KCl + BaCO3, does that make it easier to figure out how to do it?

yeah that makes sense, Ba (2+) goes with CO3 (2-), and K+ goes with Cl-
does class talk about electronegativity at all

yes we did do stuff with electronegativity but i don't think we used it for this unit, i guess it's mostly just using the charges then

yeah don't worry about the why then, just add up the charges and balance them

ok then. thanks kiwi you're a life saver :)

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