You have 2.5L of solution with a concentration of 4.9M. How many moles were dissolved in the solution?
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Ответ:
Explanation:
The condition for a reaction to be spontaneous is that the change if the free energy, ΔG, be negative.
The definition of G is G = H - TS, from which, at constant temperature:
ΔG = ΔH - TΔSThus, you must solve:
ΔG = ΔH - TΔS < 0Substituting:
-220kJ/mol - T(-0.05kJ/mol) < 0-220kJ/mol + T(0.05kJ/mol) < 0T < -220kJ/mol / ( 0.05kJ/mol)T < 4,400KThe only choice with a temperature less than 4,400K is C. 3600K.