Essential Engineering Chemistry Laboratory Experiments
Experiment 1: Strength of Hydrochloric Acid
Aim
To determine the strength of the given dilute hydrochloric acid (HCl) solution by titrating it against a standard sodium carbonate (Na₂CO₃) solution.
Chemicals Required
- Standard sodium carbonate (Na₂CO₃) solution
- Dilute hydrochloric acid (HCl) solution
- Methyl orange indicator
Apparatus Required
- Burette
- Burette stand
- Pipette
- Conical flask
- Funnel
Chemical Reaction
Na₂CO₃ + 2HCl → 2NaCl + H₂O + CO₂
Principle
Normality is defined as the number of gram equivalents of solute present in one litre of solution. According to the law of equivalence, the relationship between the reacting solutions is given by:
N₁V₁ = N₂V₂
Where:
N₁ - Normality of HCl (unknown)
V₁ - Volume of HCl used
N₂ - Normality... Continue reading "Essential Engineering Chemistry Laboratory Experiments" »
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