Equilibrio QUÍMICO Clásico de EXAMEN 2 bachillerato ejercicios resueltos de selectividad PAU

Solved chemical equilibrium exercises for 2nd year of chemistry selectivity.    • Equilibrio Químico ejercicios resueltos      • QUÍMICA OBJETIVO PAU 2026 Selectividad Cóm...      • 🔥 QUÍMICA 2º BACHILLERATO CURSO  25-26   Statement of the exercises For equilibrium: A2 (g) + B2 (g) ⇄ 2 AB (g), Kp = 5 at 25 ºC and Kp = 36 at 300 ºC. At a temperature of 300 ºC, in a 5.0 L container, we heat 2.0 mol of A2 and 2.0 mol of B2. a) (0.5 points) Explain whether the formation of AB is exothermic or endothermic. b) (1 point) Calculate the concentrations of all the substances involved in the equilibrium at 300ºC. c) (0.5 points) Using the available data, calculate Kp at 300 ºC for equilibrium: ½ A2 (g) +1/2 B2 (g) ⇄ AB(g). 00:00 Introduction 00:37 Section a) 04:20 b) concentration of substances at equilibrium 14:45 c) Calculate Kp