Equilibr_en_solucion_acuosa

4 calcular el ph y el grado de hidrólisis de las

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4. Calcular el pH y el grado de hidrólisis de las siguientes soluciones de KNO 2 . Extraiga conclusiones. a) KNO 2 0,1 M b) KNO 2 0,01 M c) 100 ml de a) + 100 ml de agua d) 100 ml de a) + 300 ml de b). 5. Un ácido orgánico débil da sales NaA: a) Escribir la ecuación de hidrólisis de NaA b) Cuál o cuáles de los siguientes factores utilizaría para impedir la hidrólisis: mayor presión ; mayor pH; menor [H + ]; menor [OH - ]; mayor temperatura (reacción endotérmica)? 6. Cuántos gramos de NaCN se necesitan disolver en suficiente agua para preparar 250 ml de una solución de pH 10,0? 7. Prediga si una solución que contiene la sal K 2 HPO 4 será ácida, básica o neutra. Ka 1 = 7,5 .10 -3 Ka 2 = 6,2.10 -8 Ka 3 = 1.10 -12 7
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