The porphryn molecule is 78.5% carbon, 3.2% hydrogen , 18.3% nitrogen
wat is the empirical formula of porphryn?
help me T.T
cant work out the ratio stuff
chem empirical formula~
2009-06-02 1:36 am
回答 (2)
2009-06-03 5:10 am
✔ 最佳答案
Mole ratio C : H : N
= 78.5/12 : 3.2/1 : 18.3/14
= 6.54 : 3.2 : 1.31
= 6.54/1.31 : 3.2/1.31 : 1.31/1.31
= 5 : 2.5 : 1
= 10 : 5 : 2
The empirical formula of porphryn = C10H5N2
=
2009-06-02 1:55 am
The proportion is depended on the molar mass of the elements in the molecule.
So the ratio of carbon : hydrogen : nitrogen
= 78.5 / 12 : 3.2 / 1 : 18.3 / 14
= 6.54 : 3.2 : 1.307
= 19.62 : 9.6 : 3.921
= 39.24 : 19.2 : 7.842
= 39 : 19 : 8
So the empirical formula of porphryn is
(C39H19N8)n
So the ratio of carbon : hydrogen : nitrogen
= 78.5 / 12 : 3.2 / 1 : 18.3 / 14
= 6.54 : 3.2 : 1.307
= 19.62 : 9.6 : 3.921
= 39.24 : 19.2 : 7.842
= 39 : 19 : 8
So the empirical formula of porphryn is
(C39H19N8)n
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