Two gases NH3 and HCL are introduced at the two ends of a 100m long tube simultaneously. If tube us of uniform cross-section. At what distance from NH3 gas end white fumes will be seen
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A white ring of NH
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Cl appears first nearer to the HCl end. The rate of diffusion is inversely proportional to square root of molar mass. The molar mass of HCl (36.5 g/mol) is higher than the molar mass of ammonia (17 g/mol). Hence, the rate of diffusion of ammonia is higher than the rate of diffusion of HCl.
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