科研之友
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摘要
The enthalpies of dissolution of 1,2,3-triazole nitrate in water were measured using a RD496-2000 Calvet microcalorimeter at four different temperatures under atmospheric pressure. Differential enthalpies (Delta difII) and molar enthalpies (Delta dissII) of dissolution were determined. The corresponding kinetic equations that describe the dissolution rate at the four experimental temperatures are d alpha/dt/s(-1) = 10(-3.75)(1-alpha)(0.96) (T = 298.15 K), d alpha/dt/s(-1) = 10 (3.73)(1 - alpha)(1.00) (T = 303.15 K), d alpha/dt/s(-1) = 10(-3.72)(1-alpha)(0.98) (T = 308.15 K) and d alpha/dt/s(-1) = 10(-3.71)(1-alpha)(0.97) (T = 313.15 K). The determined values of the activation energy E and pre-exponential factor A for the dissolution process are 5.01 kJ.mol(-1) and 10(-2.87) s(-1), respectively.
