Crude petroleum typically exhibits a characterisation factor of approximately__________________?
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Answer: B. 11
Explanation
Crude petroleum typically exhibits an empirical characterisation factor of approximately eleven for mixed-base crudes. The characterization factor correlates specific gravity and boiling point data to classify the general hydrocarbon type of a crude. Values near eleven indicate that the crude oil contains a balanced mixture of paraffinic, naphthenic, and aromatic compounds. The characterization factor, often called the Watson characterization factor, is widely used in petroleum engineering calculations. Pure paraffinic crude oils generally exhibit higher characterization factors approaching twelve or thirteen. Highly aromatic or naphthenic crude oils typically record lower characterization factors closer to ten or eleven.
A characterization factor value of three is physically impossible for petroleum fractions given their density and boiling relationships. A characterization factor of twenty-two exceeds the upper limits of any known hydrocarbon molecular density relationships. A characterization factor of twenty-eight is outside the range of petroleum chemistry and represents an incorrect magnitude.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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