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Topic: finding complex formulas  (Read 1891 times)

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Offline strugglingch3mstudent4

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finding complex formulas
« on: March 16, 2022, 11:16:35 AM »
Given that two substances, 0.010 M KSCN solution 0.010 M iron nitrate solution are added to each other and reach their peak absorption at a 1:1 ratio, find the formula of the complex formed

we weren't told whether its iron (II) or iron (III) to prevent assumptions about what the complex formula was before we started.

So since the Fe and SCN need to be in equal amounts, so far i've gotten that it should be FeSCN since SCN has a -1 charge but since i don't know what the charge of Fe is, i put in x as a place holder but i'm not sure what i would do next:

Fe(SCN)x

Offline mjc123

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Re: finding complex formulas
« Reply #1 on: March 16, 2022, 04:33:55 PM »
Do you mean Fe(SCN)x+? As you say, the Fe and SCN have to be in a 1:1 ratio; it is the charge, not the stoichiometry, that is in question.

Offline strugglingch3mstudent4

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Re: finding complex formulas
« Reply #2 on: March 16, 2022, 08:32:59 PM »
"it is the charge, not the stoichiometry, that is in question." do you mind explaining what you mean by this please? By charge do you mean overall charge, and if so, i still don't really understand how the overall charge would help me find if its iron I or II to make the formula

Offline strugglingch3mstudent4

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Re: finding complex formulas
« Reply #3 on: March 17, 2022, 01:54:10 PM »
NEVERMIND! this has been resolved!! Thank you for your help

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