The partial pressure of each constituent present in an alloy is _____________ the total vapor pressure exerted by the alloy?
Correct answer: D. Less than
- A. Either B. or C; depends on the type of alloy
- B. Equal to
- C. More than
- D. Less than
Explanation
The total vapour pressure of an alloy or liquid mixture is the sum of the partial pressures of its constituents, so each individual partial pressure is less than the total for a multicomponent mixture. Equality would occur only in the limiting case where one component alone contributes vapour pressure.
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