At room temperature, (g) and HX(g) are passed into a 1m long tube from two opposite ends at the same pressure. The formation of NH4X (s) will be closest from the injection of HX end when HX is

Question

At room temperature, $NH_3$(g) and HX(g) are passed into a 1m long tube from two opposite ends at the same pressure. The formation of NH4X (s) will be closest from the injection of HX end when HX is

Prashant Kotian · Accepted Answer

Correct answer: D. according to graham's law, rate ∝ 1 / √m. the gas hx with the highest molar mass will move slowest. molar masses: hf = 20, hcl = 36.5, hbr = 81, hi = 128. since hi is heaviest, it moves slowest, and the solid forms closest to the hi end.

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