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Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: Sarma on February 23, 2021, 07:32:27 PM

Title: Molecular formula
Post by: Sarma on February 23, 2021, 07:32:27 PM

I counted C=30, H52, N9 and O9.

The N and O seem to be ok, but I am not sure about the C and H.

Can anyone confirm if the molecular structure for the molecule is C30 H52 N9 O9? Thanks.

Title: Re: Molecular formula
Post by: Borek on February 24, 2021, 03:02:17 AM

Try to write numbers at each C atom, to make sure you don't miss any. makes checking easier.

Title: Re: Molecular formula
Post by: mjc123 on February 24, 2021, 06:25:37 AM

With only CHON (and no charge), odd N means odd H, so you can see at once that your formula is wrong.

Title: Re: Molecular formula
Post by: Sarma on February 24, 2021, 01:26:45 PM

Quote from: Borek on February 24, 2021, 03:02:17 AM

Try to write numbers at each C atom, to make sure you don't miss any. makes checking easier.

Thanks, that is what I did before I posted.

Title: Re: Molecular formula
Post by: Orcio_87 on March 06, 2021, 05:41:23 PM

@Sarma I counted: C₃₀N₉O₉H₅₃

Title: Re: Molecular formula
Post by: Orcio_87 on March 07, 2021, 05:38:11 AM

@Sarma I counted once again: C₃₀N₉O₉H₅₁