For which of the following reactions is ∆H RXN is equal to ∆H°f (heat of formation) of the products?

N2 (g) + 3 H2 (g) → 2 NH3 (g)

P (g) + 4 H (g) + Br (g) → PH4Br (L)

Calculate the standard free energy change for this reaction: N2 + O2 → 2 NO at 298 K (∆H = 180.7 KJ, ∆S = 24.7 J/K). Is this reaction spontaneous under these conditions?

Not spontaneous at all temperature

Not spontaneous at Low temperature

Which one of the following processes is/are accompanied by an increase in entropy?

N2 (g) + 3 H2 (g) → 2 NH3 (g)

Thermodynamics Quiz for Chemistry Students

Chemistry

Reviewed by Janyce Wowk

Janyce Wowk, BS (Chemistry) |

Chemistry

Review Board Member

Janyce Wowk is a chemistry professional with a B.S. in Chemistry from Montclair State University. Her experience as a research assistant and lab technician in a PFAS laboratory has allowed her to develop strong laboratory, data analysis, and research skills.

, BS (Chemistry)

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