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Determine the unknown concentration of three acid solutions using a standard known concentration of alkali.
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Aim The aim of this experiment is to determine the unknown concentration of three acid solutions using a standard known concentration of alkali (which is also known as 'base'). The three acids that will be utilised in this practical are hydrochloric acid, ethanoic acid and sulphuric acid. The concentration of the acid will be determined by titrating the acid against the base. In this scenario sodium hydroxide will be titrated against the three acids named above. Theory In water, sodium hydroxide is a strong base. It separates into sodium and hydroxide ions. The most common strong bases are the water-soluble hydroxides that belong to sodium, potassium & lithium; all three can be referred to as ionic solids. A solution containing 0.5mol of dissolved NaOH per litre of solution will also contain 0.5mol dm-3 of OH- ions. This is due to the ratio being on a 1:1 basis. Please refer to...
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