Predict the ph of a mixture containing equal moles of a dibasic acid and a monoacidic base
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The resulting solution will be acidic and therefore the pH will be less than 7
Sodium hydroxide and sulphuric acid react according to the equation:
2NaOH + H2SO4 = Na2SO4 + 2H2O
2 moles of NaOH react with one mole of H2SO4, so, if we have one mole of NaOH reacting with one mole of H2SO4, then the acid will be in excess and the resulting solution will be acidic.
A dibasic acid dissociates to form two hydrogen ions per molecule; an example would be sulphuric acid.
A monoacidic base hydrolyses/dissociates to form one hydroxide ion per molecule; an example would be sodium hydroxide.
Sodium hydroxide and sulphuric acid react according to the equation:
2NaOH + H2SO4 = Na2SO4 + 2H2O
2 moles of NaOH react with one mole of H2SO4, so, if we have one mole of NaOH reacting with one mole of H2SO4, then the acid will be in excess and the resulting solution will be acidic.
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