Titrating unknown HCl
Titrating unknown HCl is an interactive experiment in pH & Titration, a free simulation from StudyFi Lab that runs right in your browser.
The beaker holds 20 mL of HCl with an unknown concentration c₁. Add the standard NaOH solution, c₂ = 0.1 mol/L, until the indicator changes colour sharply: that is the equivalence point, where n(NaOH) = n(HCl). From the volume V₂ you read off, c₁ = c₂·V₂ / V₁.
Try this: Find the jump roughly with large drops, then repeat the titration with small drops just before it. Only then guess c₁.
Frequently asked questions
What does the “Titrating unknown HCl” experiment show?
The beaker holds 20 mL of HCl with an unknown concentration c₁. Add the standard NaOH solution, c₂ = 0.1 mol/L, until the indicator changes colour sharply: that is the equivalence point, where n(NaOH) = n(HCl). From the volume V₂ you read off, c₁ = c₂·V₂ / V₁.
How do I try “Titrating unknown HCl”?
Find the jump roughly with large drops, then repeat the titration with small drops just before it. Only then guess c₁.
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