14028599
Description
Flashcards by I Shouldn't be awake, updated more than 1 year ago
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Created by I Shouldn't be awake
almost 6 years ago
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| Question | Answer |
| What titration | MnO4- |
| Step 1. | Std. sol KMnO4 added to burette |
| Step 2. | Pipette measured volume of solution being analysed to conical flask with an excess of dilute H2SO4 to provide H+ for reduction of MnO4- |
| Step 3. | During titration MnO4- solution reacts and is decolourised as it's added. |
| What's the endpoint? | The first permanent pink colour, indicating an excess of MnO4- |
| Step 5. | Repeat titration until you get two concordant titres w/in 0.10+- cm3 of each other. |
| Reading meniscus | From top |
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