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J.17

Posted: Tue Dec 03, 2019 9:41 pm
by erica thompson 4I
What strategies can you use to figure out which part of the given salt is the anion/cation you're dealing with? How are you supposed to know that without looking it up?

Re: J.17

Posted: Wed Dec 04, 2019 2:37 am
by nicolely2F
It's mostly a matter of knowing the table of anions and cations. This includes rules that Prof Lavelle gave (e.g. knowing the cations from Groups 1 and 2)

Re: J.17

Posted: Thu Dec 05, 2019 2:59 am
by Ashley R 1A
to add on, if it helps i usually try to think about the strong acids and bases list, and the cations are the same. for example, with strong acids like HCl and HBr, because you know they are already strong acids then you can assume that molecules containing Cl or Br atoms can be categorized as acids.

Re: J.17

Posted: Thu Dec 05, 2019 2:59 am
by Ashley R 1A
to add on, if it helps i usually try to think about the strong acids and bases list, and the cations are the same. for example, with strong acids like HCl and HBr, because you know they are already strong acids then you can assume that molecules containing Cl or Br atoms can be categorized as acids.

Re: J.17

Posted: Thu Dec 05, 2019 9:17 am
by Sean Cheah 1E
Unfortunately, memorizing a table of common ions may be your best bet here. As far as I know, there is no easy way to determine the charge of an ion given its molecular formula alone.