1 mole of which alkene, when completely burned, forms 90 g of water?
| May 13, 2021 | education
Aromatic hydrocarbons, or arenes, have the general formula CnH2n-6, where n is at least 6 (the simplest arene is benzene C6H6).
The arena combustion reaction has a general form:
CnH2n-6 + mO2 = nCO2 + (n-3) H2O, where m is not important to us now.
90 g of water is 90/18 = 5 mol.
It turns out that n – 3 = 5, so n = 8.
Arena formula: C8H10, this is dimethyl- or ethyl-benzene.
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