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Chemistry, 06.06.2020 17:00 ayoismeisjjjjuan

Resolver los siguientes problemas relacionados con Soluciones Valoradas, pH, pOH y Titulacion. 1.- Si se disuelven 20 ml de alcohol en 80 ml de agua. Cual es el porcentaje de alcohol en la solucion? 2.-Que molaridad tiene una solucion de acido sulfurico, si 600 ml de la solucion contienen 50 gr del acido? 3.- Cuantos gramos de hidroxido de calcio se necesitan para preparar 750 ml de una solucion 0.15 Molar? 4.- Calcular el pH y el pOH de una solucion de HCl 4.9 × 10-4 M? 5.- Calcular el pOH y el PH de una solucion 0.00016M de KOH. 6.-Cual es el pH de una solucion 0.7 M de hidroxido de sodio? 7.- Que volumen de HBr 0.25 N sera necesario para neutralizar 50 ml de KOH 0.20 N? 8.- Cual es el volumen de acido clorhidrico 0.5 N que se requiere para neutralizar 20 ml de una solucion 0.3 N de NaOH? FORMULARIO: Va×Na=Vb×Nb pKw=pH+pOH pH=-log[H+] pOH=-log[OH-]

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