77. Calculate the Gibbs energy and determine the possibility of a reaction
3V2O5 (t) 10Al (g) = 6V (g) 5Al2O3 (t)
∆H298, kJ/mol -1573 0 0 -1677
S298, J/ (mol • deg) 131 28.4 28.9 50.9
at temperatures of 500 and 1500 K.
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