calculate ph

Calculate the pH of a buffer solution that contains 0.25 mol benzoic acid (C6H5COOH) / Litre and 0.15 mol sodium benzoate (C6H5COONa) / Litre. [ Ka = 6.5 x 10-5 for benzoic acid]

moral ration

You are asked to go into the lab and prepare an ethanoic acid - sodium ethanoate buffer solution with a pH of 4.00 ± 0.02 . What molar ratio of [CH3COOH] / [ CH3COONa ] should be used?

buffer effective

Over what range of pH is a HOCl - NaOCl buffer most effective? pH 2.0 - pH 4.0 pH 7.5 - pH 9.5 pH 6.5 - pH 8.5 pH 6.5 - pH 9.5 pH 1.0 - pH 14.0

Acid Base Pairs

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acquaeous solution

What is the pH of a 2.5 mol HCL / liter aqueous solution?

Calculate Ka

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Litre acquous solution

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Concentration diet cola

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Acid base solution

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sulfide ion

Hydrosulfuric acid is a diprotic acid with Ka1 = 5.7E-8 and Ka2=1E-19 Determine the concentration of sulfide ions in a 0.10M of hydrosulfuric acid solution