22. Solving a chemistry problem
Seller: Derkach
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Product description
- For pure ammonia, the temperature dependences of saturated vapor pressure are known at equilibrium liquid - vapor and crystals - vapor
Crystals-steam T, K 164.1 172.4 181.3 192.3 194.0
R, Pa 133 403 1333 4447 5333
Liquid-vapor T, K 198.9 208.3 216.2 227.8 239.6
R, Pa 7999 18033 26600 53330 101320
At the triple point, the mass densities in the liquid and crystalline states are 817 and 827 kg/m3, respectively.
Find:
- Construct graphs of the dependence of saturated vapor pressure on temperature P = f(T) and a graph of lnP = f(1/T)
- Determine the coordinates of the triple point.
- Calculate graphically the molar heats of evaporation and sublimation, assuming that they do not depend on temperature.
- Determine the molar heat of fusion.
- Find the melting point of the substance (Tmelt) at p = 8•107 Pa.
Additional information
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