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Entropy

Q. Given the values of delta Hrxn , delta Srxn and T determine delta S univ and predict sheathed or not each reach is spontaneous ( assume all reactants and products are in their standard states) delta Hrxn = -95k/j ; delta Srxn =-157J/K; T =298K

Solved • May 2, 2020

Entropy

Q. Of the following, the entropy of _____ is the largest. A) B2F4(g) B) BF3(g) C) B2H6(g) D) BCl3(l) E) B2O3(s)

Solved • Apr 30, 2020

Entropy

Q. The following are molecular formulas and names of various molecules. Match the name with entropy value:

Solved • Apr 24, 2020

Entropy

Q. Using the data calculate the standard entropy change for each of the following reactions at 25 degrees Celsius: ( I attached the data and question)

Solved • Apr 21, 2020

Entropy

Q. Calculate the value of ΔS° for the reaction: 2 H2S (g) + 3 O2 (g) à 2 SO2 (g) + 2 H2O (l) using the following ΔS° values: H2S (g) = 205.8 J/mole K H2O (l) = 70.0 J/mol K O2 (g) = 205.2 J/mole K SO2 (g) = 248.2 J/mole K

Solved • Apr 21, 2020

Entropy

Q. Examine each of the following equations, and explain why entropy is likely to increase or decrease in the forward direction: ​a.) 3 CaCl2 (aq) + 2 Na3PO4 (aq) → Ca3(PO4)2 (s) + 6 NaCl (aq) b.) 4 FeS (s) + 7 O2 (g) → 2 Fe2O3 (s) + 4 SO2 (g) c.) PCl5 (s)+ 4 H2O (l) → H3PO4 (aq) + 5 HCl(aq) d.) C2H6O(g) + 3 O2 (g) → 2 CO2 (g)+ 3 H2O (g)

Solved • Apr 21, 2020

Entropy

Q. Determine ΔSsystem for the reaction CH3CH2CH3(g) + 5O2(g) → 3CO2(g) +4H2O(l)

Solved • Apr 21, 2020