is bacl2 the same as ba(cl)2? (1 Viewer)

[krystalkay]

Title says it all.
I got confused when my friend asked me cause doesnt the bracket just mean lots of?
as in ()2 means 2lots of doesnt it?

 

[soloooooo]

Yes, I believe so.

 

[deswa1]

Yes ()2 means two lots of whats in the brackets but you wouldn't write it like this. The correct thing is just BaCl2 (also note capitals).

You use the brackets when you have more than one of something that has more than one element- for example Barium Nitrate would be Ba(NO3)2

 

[krystalkay]

So would you get it wrong if BaCl2was written as Ba(Cl)2 in the hsc?

 

[deswa1]

So would you get it wrong if BaCl2was written as Ba(Cl)2 in the hsc?

Not sure- maybe given that they mark chem quite harshly. Why though would you?

 

[krystalkay]

Like just saying if u accodentally write it that way, but technically its not wrong right...?
not saying I'm going to but, just saying in test condition ppl might accidentally do it

 

[umm what]

Why would you write in the bracket?

 

[umm what]

Like just saying if u accodentally write it that way, but technically its not wrong right...?
not saying I'm going to but, just saying in test condition ppl might accidentally do it

not wrong, but what's the point of writing it like that?

 

[2xL]

Not according to my chem teacher. Lost half mark in the half yearlies cos of it, wrote Zn(Cl)2 from memory. in fairness quite a stupid way of writing it on my behalf..but i didn't see why it was "wrong". Oh well.

 

[umm what]

Not according to my chem teacher. Lost half mark in the half yearlies cos of it, wrote Zn(Cl)2 from memory. in fairness quite a stupid way of writing it on my behalf..but i didn't see why it was "wrong". Oh well.

WHy the hell would you put brackets?!

 

[krystalkay]

Exam conditions ppl do shit like that...

 

[zhiying]

Treat it like math, you wont write x^2 as (x)^2, but you can write x^2y^2 as (xy)^2

 

[umm what]

Exam conditions ppl do shit like that...

agree

 

[iSplicer]

So would you get it wrong if BaCl2was written as Ba(Cl)2 in the hsc?

Yes. Ba(Cl)2 defies convention.

 

[2xL]

WHy the hell would you put brackets?!

Yeah idk stupid me. still topped exam so its algud

 

[girlworld_club]

are teacher considers it wrong to put inappropriate brackets. So i would just naturally assume that is BaCl2

 

[golgo13]

the brackets is used when u have more than one element in the mix, it's sorta like Fe (iii) combining with SO4 2-, u can't give the individual compositions of SO4 a 3 charge but the whole thing gets it so u get Fe2(SO4)3
However if it's Ba (pos 2) and Cl (neg 1), either way is correct in a sense, BaCl2 or Ba(Cl)2, however having said that i would go with BaCl2, since some markers would take marks off cause maybe you haven't simplified the form

 

[someth1ng]

Ba(Cl)2 is technically incorrect based on the rules (like above), if you do Ba(Cl)2, you should lose a mark.

 

[golgo13]

It would be yes but i just remember your meant to give it in the simplest form, just don't remember if there is strings or rules attached to the formalilty

 

[Samir97]

Yeah, brackets are used only for compounds