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

Pressure exerted by saturated water vapour is called aqueous tension.

1.	Pressure exerted by saturated water vapour is called aqueous tension. What correction tern will you apply to the total pressure to obtain pressure of dry gas ?
Answer» Solution :WHENEVER a GAS is collected over water, it is saturated and moistured with water vapoures which possesses their own pressure. The pressure due to water vapours is known as aqueous tension thus, the TOTAL pressure of the gas (P moisdt gas) is `P_("MOIST gas")=P_("dry gas")+` aqueous tension Thus, `P_("dry gas")` is given as `P_("dry gas")=P_("moist gas")-` aqueous tension Hence, the correction term applied to the total pressure of the gas in order to OBTAIN pressure of dry gas is p moist gas - aqueous tension.