Calculate Δ G° for the following reaction:
2 NO ₂( g ) → N ₂( g ) + 2 O ₂( g ) .
Δ G _f° in kJ\moles for NO ₂( g ) is 51.30.

Question

Calculate Δ G° for the following reaction: 2 NO ₂( g )→ N ₂( g )+ 2 O ₂( g ). Δ G _f° in kJ\moles for NO ₂( g )is 51.30.

Quizplus · Accepted Answer

The reaction involves the decomposition of 2 moles of NO₂(g) into N₂(g) and O₂(g). Since ΔG°f for NO₂(g) is given as 51.30 kJ/mol, for 2 moles it would be 2 * 51.30 = 102.6 kJ. The products N₂(g) and O₂(g) are elements in their standard states, so their ΔG°f is 0. Therefore, ΔG° for the reaction is 0 - 102.6 = -102.6 kJ, which is approximately -103 kJ.

Calculate Δ G° for the Following Reaction