Calculate the entropy change when 3.66 g of h2 reacts with o2 according to the reaction 2 h2(g) + o2(g) → 2 h2o(ℓ) at 298 k and 1 atm pressure. the standard molar enthalpy of formation of h2o(ℓ) at 298 k is −285.8 kj/mol. the corresponding free energy of formation is −237.2 kj/mol. answer in units of j/k.

The entropy change will be ΔS = - 150.0 J/K.

Explanation:

2 H₂(g) + O₂(g) → 2 H₂O(ℓ)  

ΔH = -258.8 kJ/mol

ΔG = - 237.2 kJ/mol

1 mol H₂ 2 g

x             3.66 g

x = 1.83 mol

1 mol H₂ 1 mol H₂O

1.83 mol H₂ 1.83 mol H₂O

ΔH = 1.83 mol x -258.8 kJ/mol

ΔH = - 478.78 kJ

ΔG = 1.83 mol x  - 237.2 kJ/mol

ΔG = 434.076 kJ

ΔG = ΔH - TΔS

ΔS = (ΔH - ΔG) / T

ΔS = [ - 478.78 kJ - (- 434.076 kJ)]/298 K

ΔS = - 150.0 J/K

the answer is a and have a great day

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?