Molecular to Empirical

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Tiffany Tufenkjian 1E
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Joined: Fri Apr 06, 2018 11:05 am

Molecular to Empirical

Postby Tiffany Tufenkjian 1E » Sun Apr 15, 2018 9:41 pm

If we are given the molecular formula NH4OH, is it best to write the empirical formula as H5NO or would it remain the same?

Priscilla Okaiteye
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Joined: Tue Nov 21, 2017 3:02 am

Re: Molecular to Empirical

Postby Priscilla Okaiteye » Sun Apr 15, 2018 9:57 pm

It would remain the same. The empirical formula is the formula of the chemical equation with the lowest ratio or the most simplified version of the formula. It would not be H5NO because that is a whole different formula.

704992521
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Re: Molecular to Empirical

Postby 704992521 » Sun Apr 15, 2018 9:58 pm

No, that would change the structure of the molecule. The molecular formula would technically be the same as empirical in this case I think

Jose Lupian 1C
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Re: Molecular to Empirical

Postby Jose Lupian 1C » Sun Apr 15, 2018 10:04 pm

I think it is best if you kept the formula that you were given the same. In this example, the empirical and molecular formula are the same since molecular formula can't be reduced any further.

Rummel Requerme 1E
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Re: Molecular to Empirical

Postby Rummel Requerme 1E » Sun Apr 15, 2018 10:26 pm

It would remain the same. Changing it like that would translate a different structure.

Corryn Doll
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Re: Molecular to Empirical

Postby Corryn Doll » Sun Apr 15, 2018 10:31 pm

For this specific structure, both the empirical and molecular formulas are going to be the same as the empirical formula represents the smallest ratio of each element needed. If you were to change it as you did, then you would in fact be writing an equation for a different structure entirely.

Yitzchak Jacobson 1F
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Re: Molecular to Empirical

Postby Yitzchak Jacobson 1F » Mon Apr 16, 2018 12:09 am

in this case that you specifically mentioned, I advise leaving both the empirical and molecular formulas the same.

Chem_Mod
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Re: Molecular to Empirical

Postby Chem_Mod » Mon Apr 16, 2018 12:30 pm

It would not be wrong for now, but there is a reason why it's written NH4OH (ammonium hydroxide). NH4+ is an ammonium ion, and OH- is a hydroxide ion. These ions form a ionic compound. Please review sections B-D if you are not sure about polyatomic ions and naming compounds.

Maria Zamarripa 1L
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Re: Molecular to Empirical

Postby Maria Zamarripa 1L » Mon Apr 30, 2018 11:02 pm

the empirical is the ratio rather than the actual so you would just simplify as much as possible.

Yitzchak Jacobson 1F
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Joined: Wed Nov 22, 2017 3:00 am

Re: Molecular to Empirical

Postby Yitzchak Jacobson 1F » Sun May 13, 2018 11:16 pm

In this case, I would just leave it the same. I understand your confusion regarding this topic because I had a very similar problem.
Hope this info helps! :)


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