Pressure exerted by saturated water vapour is called aqueous tension. What correction term will you apply to the total pressure to obtain pressure of dry gas?

<p><span data-teams="true">This is a short answer type question as classified in NCERT Exemplar</span></p><p>The gas collected over water, is moist and has saturated water vapour that exerts pressure which is known as aqueous tension. So the total pressure of the gas will be:</p><p>P_{moist gas} &nbsp; = &nbsp; P_{dry gas}&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;+&nbsp; &nbsp; Aqueous Tension&nbsp;</p><p>∴ P_{Dry&nbsp; gas}&nbsp;= &nbsp; P_{moist&nbsp; gas}&nbsp;&nbsp;&nbsp;-&nbsp; &nbsp; Aqueous Tension &nbsp; &nbsp; or&nbsp;</p><p>&nbsp;P_{Dry&nbsp; gas}&nbsp; &nbsp; = &nbsp; P_Total&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-&nbsp; &nbsp; Aqueous Tension&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</p><p>So, the correction term you apply to the total pressure to obtain pressure of dry gas is&nbsp; P_Total&nbsp;- Aqueous Tension.&nbsp;&nbsp;</p>

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