BRAINCAKEMaking a Standard Solution
1. Add the primary standard to a weighing bottle and weigh accurately.
2. Transfer as much as possible of the primary standard to a clean beaker and reweigh the weighing bottle.
3. Add about 100cm3 of deionised water to the beaker and stir with a stirring rod until all the substance has dissolved.
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Key terms in this lesson
- primary standard
- A substance pure and stable enough to be weighed out accurately and used to make a standard solution directly.
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All 39 lessons in Amount of Substance and Calculations · All Edexcel AS-level Chemistry topics