Calculate the [H+], [OH-], pH, pOH for the resulting solution if 20.00 mL sample of 0.2650...

Calculate the [H⁺], [OH^-], pH, pOH for the resulting solution if 20.00 mL sample of 0.2650 M NaOH was titrated with 21.33 mL of 0.1175 M H₂SO_4.

Expert Solution

H2SO4 NaOH

MA = 0.1175M MB = 0.2650M

VA = 21.33ml VB = 20ml

M = MBVB-MAVA/VA + VB

= 0.2650*20-0.1175*21.33/21.33+20

= 2.793725/41.33 = 0.0676M

M = [OH^-] = 0.0676M

[H^+] = Kw/[OH^-]

= 1*10^-14/(0.0676) = 1.48*10^-13M

POH = -log[OH^-]

= -log0.0676

= 1.17

PH = 14-POH

= 14-1.17 = 12.83

queen_honey_blossom answered 1 year ago

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