Van der Waal's constants for neon and helium are (a1, b1) and (a2, b2), respectively. The maximum moles of helium which will form a homogeneous mixture with one mole of neon at T K and P atm pres

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Van der Waal's constants for neon and helium are (a1, b1) and (a2, b2), respectively. The maximum moles of helium which will form a homogeneous mixture with one mole of neon at T K and P atm pressure, is

TestHub · Accepted Answer

A gas can be liquefied only below its critical temperature, T C = (8a)/(27Rb). For helium T C ≈ 5 K, far below any ordinary T K, so at T K helium remains a gas at any pressure. Gases above their critical temperatures are completely miscible in all proportions, so any amount of helium forms a homogeneous gaseous mixture with neon; there is no upper limit. Ans: (d)

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