BRAINCAKETitration Calculations - 1
Not every titration reaction has a 1 : 1 ratio. Sulfuric acid is diprotic: each H2SO4 releases two H+ ions, so it needs two moles of sodium hydroxide.
H2SO4(aq) + 2NaOH(aq) → Na2SO4(aq) + 2H2O(l)
The ratio H2SO4 : NaOH is 1 : 2. Getting this step the wrong way round is the most common error, so write the ratio out in words before you use it.
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Key terms in this lesson
- concentration
- The amount of solute, in moles, dissolved in each dm3 of solution.
- mole
- The amount of substance containing 6.02 x 10^23 particles, the same number as the atoms in 12 g of carbon-12.
More in Amount of Substance and Calculations
- Making a Standard Solution
- Titrations
- The Titration Method
- Indicators
- Concordant Titres and Mean Titres
- Calculating Concentration
- Titration Calculations - 2
- Titration Calculations - 3
All 39 lessons in Amount of Substance and Calculations · All Edexcel AS-level Chemistry topics