Stoichiometry

Q1: Pick out the wrong statement:

A Clausius-Clapeyron equation relates the latent heat of vaporisation to the slope of the vapor pressure curve.

B At the boiling point of liquid at the prevailing total pressure, saturated absolute humidity is infinite.

C Percentage saturation and relative saturation are numerically equal for an unsaturated vapor gas mixture.

D Clapeyron equation is given by,; where, P = vapor pressure, T = absolute temperature, λ = latent heat of vaporisation, VG and VL = volumes of gas and liquid respectively.

ANS:C - Percentage saturation and relative saturation are numerically equal for an unsaturated vapor gas mixture.

The wrong statement is: "At the boiling point of liquid at the prevailing total pressure, saturated absolute humidity is infinite." At the boiling point of a liquid, the saturated absolute humidity is not infinite; it reaches its maximum value under the given conditions of temperature and pressure. Beyond this point, any additional increase in temperature would result in the complete conversion of the liquid to vapor and not an increase in absolute humidity. So, the statement is incorrect.



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