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In a palladium membrane hydrogen purifier operating above 300°C, which outcome results when hydrogen partial pressure increases?

A)Increased hydrogen permeation flux occurs
B)Palladium hydride phase transformations cease
C)Lower hydrogen dissociation on surface
D)Reduced hydrogen solubility in palladium

💡 Explanation

An increased hydrogen partial pressure drives a higher concentration gradient across the membrane, causing *Sieverts' law* permeation. Therefore, the permeation flux increases rather than solubility decreasing or phase transformations ceasing, because the membrane provides a path.

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