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Creado por I Shouldn't be awake
hace alrededor de 6 años
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Pregunta | Respuesta |
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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