Van der Waal's constants for argon and hydrogen are (a₁, b₁) and (a₂, b₂), respectively. The maximum moles of hydrogen which will form a homogeneous mixture with two moles of argon at T K and P a

Question

Van der Waal's constants for argon and hydrogen are (a₁, b₁) and (a₂, b₂), respectively. The maximum moles of hydrogen which will form a homogeneous mixture with two moles of argon 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 hydrogen T C ≈ 33 K, far below any ordinary T K, so hydrogen remains gaseous at any pressure at T K. Gases above their critical temperatures are completely miscible in all proportions, so any amount of hydrogen mixes homogeneously with argon. Ans: (b)

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