gravimetric analysis

Question

In gravimetric analysis precision improves by:

RankGuru · Accepted Answer

1. **Definition**: Gravimetric analysis involves determining the amount of a substance by converting it into a solid of known composition and weighing it.
2. **Washing**: Critical to remove any co-precipitated impurities or mother liquor that would add false mass.
3. **Drying**: The precipitate must be heated to remove all moisture.
4. **Constant Mass**: This means heating and weighing the sample repeatedly until the mass no longer changes by more than a specified threshold ($e.g., 0.0002$ g). This ensures the substance is pure and completely dry for accurate calculation.

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More gravimetric analysis Practice Questions

In gravimetric estimation of chloride, the precipitate formed is: