2NO(g) + O2(g)→ 2NO2(g); AH°= -125 kJ/mol; AS°= -150 J/mol-K Below a temperature of K, this reaction is spontaneous.

What is Sº for B in the reaction 3A 2B if AS (rxn) =-221.8 J/mol K? [S° (A) = (205.0 J/mol ·K)]

A chemical engineer is studying the two reactions shown in the table below. In each case, he fills a reaction vessel with some mixture of the reactants and products at a constant temperature of 63.0 °C and constant total pressure. Then, he measures the reaction enthalpy AH and reaction entropy AS of the first reaction, and the reaction enthalpy AH and reaction free energy AG of the second reaction. The results of his measurements are shown in the table. Complete the table. That is, calculate AG for the first reaction and AS for the second. (Round your answer to zero decimal places.) Then, decide whether, under the conditions the engineer has set up, the reaction is spontaneous, the reverse reaction is spontaneous, or neither forward nor reverse reaction is spontaneous because the system is at equilibrium. AH = 1237. kJ J AS = 3752. K ? C,H1,0,(s) → 6C (s) + 6H, (g) + 30,(g) AG = ||kJ Which is spontaneous? this reaction the reverse reaction neither

What is true about 02 (g) + 2HCl (g) AHr 48 kJ mol i. The reaction is non-spontaneous. ii. The products are more stable than the reactants. 1) only 2) i only 4) the following reaction at 25°C? H202 (g) + c12 (g) ASr=-123.2 J mol K AGr=85 kJ mol ¹ 3) both i and ii neither i nor ii