Use the given standard entropy values to calculate the standard entropy change to convert hydrogen chloride to chlorine in the given reaction: 4HCl(g) + O2(g) → 2Cl2(g) + 2H2O(g) S°(J/K•mol): HCl(g) = 186.8 O2(g) = 205 Cl2(g) = 223 H2O(g) = 188.7
1. Use the given standard entropy values to calculate the standard entropy change to convert hydrogen chloride to chlorine in the given reaction:
4HCl(g) + O2(g) → 2Cl2(g) + 2H2O(g)
S°(J/K•mol): HCl(g) = 186.8
O2(g) = 205
Cl2(g) = 223
H2O(g) = 188.7
2. Predict whether the following reaction leads to an increase or a decrease in entropy.
Ag+(aq) + Cl-(aq) → AgCl(s)
3. Calculate ∆G° for the combustion of ethane
2C2H6(g) + 7O2(g) → 4CO2(g) + 6H2O(l)
With the following ∆G°f:
C2H6(g) = -32.86 kJ/mol
CO2(g) = -394.4 kJ/mol
H2O(l) = -237.2 kJ/mol
4. From the following ∆H and ∆S values, predict whether the reaction would be spontaneous. If not, at what temperature might the reaction become spontaneous?
∆H = -126 kJ ∆S = 84 J/K
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