Cox chart, which is useful in the design of distillation column particularly for petroleum hydrocarbons, is a plot of (where, P = vapor pressure, T = temperature) ?
Correct answer: D. log P vs. T
- A. P vs. log T
- B. log P vs. log T
- C. T vs. P
- D. log P vs. T
Explanation
A Cox chart plots the logarithm of vapour pressure against temperature, commonly using log P versus T. It is especially useful for estimating vapour-pressure behaviour of petroleum fractions in distillation design.
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