Question

Calculate buffer pH after adding strong acid or strong base. Close Problem Determine the pH change when 0.064 mol HClO4 is added to 1.00 L of a buffer solution that is 0.309 M in HNO2 and 0.262 M in NO2-. pH after addition − pH before addition = pH change =

Answer 1

Here allda HNOL, pH before addition 2 base 2 NOZ Lansgale) pla + log / Base] Lacld pica + log (0.262 m) 10-309m moles MNO Onn 2 0-309 mx 1-001 20-309 - moles moles No - 2 0-262 moles. when base it we add strong arld Cuke component of bother react and produce weak and Heled, with No, t 14 0-262 moles -0-064 0-198 moles 0-064 moles - o-oby HNO 0-309 moles to-oby 0-373 moles C F pH after addiron a plea + rog (No - ] 2 0-198 m 0.373 m pn change alpha + log ( 0198 pn change 2 pa + 10910198 - (pila logfore olla 0-373 2 - 0 2034 - -0-203 negative sign indicates decrease after addinen of Hologro buffer. in the