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AP EAMCET202120 Aug 2021Morning ShiftChemistrySolutionsActual

If the K H values for Ar ( g ) , CO 2 ( g ) , HCHO ( g ) and CH 4 ( g ) respectively are 40 . 39 , 1 . 67 , 1 . 83 × 10 - 5 and 0 . 413 , then identify the correct increasing order of their solubilities.

Options

  1. AHCHO < CH 4 < CO 2 < Ar
  2. BHCHO < CO 2 < CH 4 < Ar
  3. CAr < CO 2 < HCHO < CH 4
  4. DAr < CO 2 < CH 4 < HCHO

Correct answer

D. Ar < CO 2 < CH 4 < HCHO

Step-by-step solution

According to the Henry's law, the solubilities is inversely proportional to the hydration constant K H . So, higher the solubility, lower the K H value. So, the formaldehyde has the lowest K H value. So, it has the highest value of solubility. The order of solubility is Ar < CO 2 < CH 4 < HCHO .

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