White tin is the high temperature form of the metal.Given that the density of gray tin is 5.769 g/cm³ and that of white tin is 7.28 g/cm³ raising the pressure will favor the A)more dense allotrope and lower the transition temperature of 13.2°C. B)more dense allotrope and raise the transition temperature of 13.2°C. C)less dense allotrope and lower the transition temperature of 13.2°C. D)less dense allotrope and raise the transition temperature of 13.2°C.

Question

Quizplus · Accepted Answer

According to Le Chatelier's principle, increasing pressure favors the formation of the phase with the lower volume (higher density), which in this case is white tin with a density of 7.28 g/cm^3 compared to gray tin's 5.769 g/cm^3. This would lower the transition temperature from gray to white tin, making white tin more stable at lower temperatures under high pressure.

White Tin Is the High Temperature Form of the Metal