Silver Debye temperature

Even good heat conductors such as silver or copper come off badly when compared to diamond. The thermal conductivity of the latter passes through a maximum of 175 W cm" K" at 65 K (about 1 /30 of the Debye temperature). In the range of temperatures about 300 K as relevant for practical applications, the value is still 15-30Wcm" K". ... 

The Debye characteristic temperature of silver is 212. Calculate the atomic heat capacity Cv of this metal at 20.0° K and 300° K. 

Calculate the standard entropy of silver at 25 C (298 K) from the third lav/ of thermodynamics, assuming that the molar heat capacity at temperatures below -258°C HS K) follows Debye s equation. 

For hydrogen electrodes having hydrochloric acid as electrolyte within the range of validity of the Debye-Hiickel limiting law the mean activity coefficient of HCl (wJhci < 0.01 mol kg ) is set equal to the single-ion activity coefficient of the hydrogen ion [12]. The molar mean activity coefficient of HCl, y Hci. at various temperatures is best known at the molality 0.01 mol kg [13]. These values are for instance used in the primary method for pH to determine the standard potential of the silver/silver chloride. 

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