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1.) Calculate the concentrations of all species present (Na+, C6H5CO2-, C6H5CO2H, H3O+ and OH-) in 0.060M of Sodium benzoate. The pH is 8.48 and Ka = 6.5 x 10-5.

2.) Calculate the concentrations of H2SO3, HSO3-, SO32-, H3O+ and OH- in a 0.025M H2SO3. The pH is 1.88 and the Ka1= 1.5 x 10-2 and Ka2 = 6.3 x 10-8.

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