Question

Determina el pH y el pOH de las siguientes sustancias y decide que sustancia es mas acida.
HBr: 1.00 * 10-5M
H2S 1.00 * 10-6 M
HCl: 1.00 * 10-5M

Answer 1

HBr:

pH = -log [ H+]

pH = -log ( 1 X 10-5 )

pH = - ( -5) = 5

pH + pOH = 14

pOH = 14 - pH

pOH = 14 – 5 = 9

H2S:

pH = -log [ H+]

pH = -log ( 1 X 10-6 )

pH = - ( -6) = 6

pH + pOH = 14

pOH = 14 - pH

pOH = 14 –  6 = 8

HCl

pH = -log [ H+]

pH = -log ( 1 X 10-5 )

pH = - ( -5) = 5

pH + pOH = 14

pOH = 14 - pH

MAS ACIDO EL HCl y HBr

pOH = 14 – 5 = 9