Predict the sign of ΔS0 for the following reactions and justify your answers: CS2 (l) ----> CS2 (g) 2Hg (l) + O2 (g) ---->2HgO (s)

Calculate for the ΔS given the values of  ΔHo = +119.2 kJ,  ΔGo= +13.4 kJ at 298.5 K of temperature. CO(NH2)2(aq) + H2O(l) ----> CO2(g) + 2 NH3(g)

Methanol is relatively inexpensive to produce. Much consideration has been given to using it as a precursor to other fuels such as methane, which could be obtained by the decomposition of the alcohol. CH3OH(l) -> CH4(g) + 1/2 O2(g) (a) What are the sign and magnitude of the entropy change for the reaction? Does the sign of Δ

For each of the following reactions, calculate ΔH∘rxn, ΔS∘rxn, and ΔG∘rxn at 25 ∘C. State whether or not the reaction is spontaneous. If the reaction is not spontaneous, would a change in temperature make it spontaneous? If so, should the temperature be raised or lowered from 25 ∘C?2CH4(g)→C2H6(g)+H2(g), Calculate ΔS∘rxn at 25 ∘C. 2NH3(g)→N2H4(g)+H2(g) Calculate ΔS∘rxn at 25 ∘C. N2(g)+O2(g)→2NO(g) Calculate ΔS∘rxn at 25 ∘C. 2KClO3(s)→2KCl(s)+3O2(g) Calculate ΔS∘rxn at 25 ∘C.

Using the information given below, calculate the ΔΔSo at 25oC for the given reaction.                                              2 AlCl3(s)  →  2 Al(s)  +  3 Cl2(g)   SoAl(s) = 28.3 J/(mol K);  SoCl2(g) = 223.0 J/(mol K);  SoAlCl3(s) = 110.7 J/(mol K)   Select one: a. 504.2 J/K b. 140.6 J/K c. -833.8 J/K d. -305.4 J/K

Two different gases occupy the two bulbs shown here. Consider the process that occurs when the stopcock is opened, assuming the gases behave ideally. Predict the signs of ∆H and ∆S for the process.

Nitric oxides, NONO and NO2NO2, contribute to air pollution, acid rain, and the depletion of the ozone layer. After NONO forms in the combustion chamber of an automobile engine, it reacts further with oxygen to form NO2NO2. The reaction is given by: 2NO(g)+O2(g)→2NO2(g). Calculate ΔS∘rxn for the reaction?   Entropy values given by following table SubstanceSubstance S∘ (J/mol⋅K)S∘ (J/mol⋅K) NO2NO2 240.0 O2O2 205.2 NONO 210.8

The element gallium (Ga) freezes at 29.8°C its ΔHfus = 5.59 kJ/ mol. Calculate the valueof ΔS when 1.0 mol gallium freezes at its normal melting point. Is ΔS positive ornegative? Calculate the value of ΔS when 30.0 g of Ga(l) solidifies at 29.8 °C

Predict the sign of ASO for the following reactions and justify your answers: CS2 (1) ----> CS2 (g) 2Hg (I) + O2 (g) ---->2HgO (s)

For a particular reaction, Δ?=−14.20 kJ and Δ?=−198.5 J/K. Calculate Δ? for this reaction at 298 K