F SC 432 Quiz 1 Key – Flashcards
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| T/F? crude oil contains aromatics |
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| True |
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| T/F? crude oil contains heteroatoms like S, N, and O |
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| True |
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| T/F? crude oil contains alkenes |
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| False |
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| T/F? crude oil contains metals such as Ni and V |
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| True |
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| T/F? crude oil contains naphthenes |
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| True |
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| Which inorganic gases are typically found in crude oils? |
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| CO2 and H2S |
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| T/F? Iso-alkanes have lower boiling points than n-alkanes with the same carbon number |
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| True |
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| T/F? Organic sulfur compounds tend to concentrate in the lower boling fractions of crude oil. |
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| False |
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| T/F? Vapor pressure of hydrocarbons decreases with the increasing carbon number |
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| True |
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| T/F? Vapor pressure of hydrocarbons decreases with the increasing carbon number |
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| True |
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| T/F? Naphthenes have higher densities than n-alkanes with the same carbon number |
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| True |
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| crude oil is generally classified according to ___ |
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| hydrocarbon composition |
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| Two crude oils A (Paraffins: 20%, Aromatics: 10%) and B (Naphthenes: 14% , Aromatics: 40%) are blended in A/B = 2/5 to make C. What is the naphthene content of C? |
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| 30.0% |
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| Characterization factors are calculated using ___ |
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| physical properties of crude oil |
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| What is your estimate (+/- 5) of the octane number of n-octane? |
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| -10 |
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| The principal reason of adding MTBE to gasoline was to ___ |
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| decrease CO emissions in the exhaust |
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| Two strategies for converting heavy ends of crude oil to distillate products are ___ and ___ |
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| carbon rejection hydrogen addition |
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| degree of separation in a distillation process decreases in what order? (ASTM, EFV, TBP)? |
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| TBP (best sep.) ASTM EFV (worst sep.) |
