Chemistry-
General
Easy

Question

At constant volume and temperature conditions, the rate of diffusion DA and DB of gases A and B having densities rho subscript A and rho subscript B are related by the expression,

  1. D subscript A end subscript equals open square brackets D subscript B end subscript. fraction numerator rho subscript A end subscript over denominator rho subscript B end subscript end fraction close square brackets to the power of 1 divided by 2 end exponent    
  2. D subscript A end subscript equals open square brackets D subscript B end subscript. fraction numerator rho subscript B end subscript over denominator rho subscript A end subscript end fraction close square brackets to the power of 1 divided by 2 end exponent    
  3. D subscript A end subscript equals D subscript B end subscript open parentheses fraction numerator rho subscript A end subscript over denominator rho subscript B end subscript end fraction close parentheses to the power of 1 divided by 2 end exponent    
  4. D subscript A end subscript equals D subscript B end subscript open parentheses fraction numerator rho subscript B end subscript over denominator rho subscript A end subscript end fraction close parentheses to the power of 1 divided by 2 end exponent    

The correct answer is: D subscript A end subscript equals D subscript B end subscript open parentheses fraction numerator rho subscript B end subscript over denominator rho subscript A end subscript end fraction close parentheses to the power of 1 divided by 2 end exponent

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