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26 October, 18:29

Calculate the solubility (in m units) of ammonia gas in water at 298 k and a partial pressure of 2.50 bar. the henry's law constant for ammonia gas at 298 k is 58.0 m/atm and 1 bar=0.9869 atm.

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  1. 26 October, 18:32
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    Henry's Law (formulated in 1803 by William Henry) states that aa constant temperature, the amount of gas dissolved in a liquid is directly proportional to the partial pressure exerted by that gas on the liquid.

    Mathematically it can be formulated as

    C = H⨯P

    being:

    C: the molar concentration of dissolved gas A,

    P: the partial pressure of it

    H: Henry's constant

    Substituting:

    C = P * H

    C = (2.50 * 0.9869) * 58.0

    C = 143.1

    Answer:

    the solubility (in m units) is

    C = 143.1
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