BRAINCAKETitration Calculations - 2
Sodium carbonate is a common standard solution because it can be weighed accurately as a pure, stable solid. It is often used to find the concentration of hydrochloric acid, with methyl orange as the indicator.
Na2CO3(aq) + 2HCl(aq) → 2NaCl(aq) + H2O(l) + CO2(g)
Here the ratio is Na2CO3 : HCl = 1 : 2, so this time you multiply by 2 to go from the carbonate to the acid.
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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 - 1
- Titration Calculations - 3
All 39 lessons in Amount of Substance and Calculations · All Edexcel AS-level Chemistry topics