Identify the compound with the standard free energy of formation equal to zero. KCl (s) O3(g)...
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Identify the compound with the standard free energy of formation equal to zero.
KCl (s)
O3(g)
NO(g)
H2(g)
Homework Answers
By convention the heat of formation of elements in their standard state is zero.
Standard state of an element/compound in thermodynamics is themost stable state of that substance at given temperature (usually 298K), 1 atm pressure .
H2 (g) is the standard state of hydrogen and thus its heat of formation is ZERO.
Ozone is formed by reaction
3O2(g) ----> 2O3 , and thus possess heat of formation.
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Identify the compound with the standard free energy of formation
equal to zero.
KCl (s)
O3(g)...
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Question 14 (1 point) Which of the following has a standard enthalpy of formation of zero? OP(s, red) Br2(g) O3(g) 12(8) Arce)
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8. The standard free energy of formation of L-serine (s) is -508.8 kJ/mol at 25 °C....
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Calculate the standard change in Gibbs free energy, Δ?∘rxnΔGrxn∘ , for the given reaction at 25.0...
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Question 14 (1 point) Which of the following has a standard enthalpy of formation of zero? OP(s, red) Br2(g) O3(g) 12(8) Arce)
8. The standard free energy of formation of L-serine (s) is -508.8 kJ/mol at 25 °C. The compound forms a saturated solution in water at 4.02 moles/kg at which the activity coefficient is y = 0.602. Calculate AG (aq)(L – serine). (Ans. -511.0 kJ/mol)
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