Question
Regarding the code of practice in a laboratory, what are the points that one should remember regarding handling test-tubes while heating or adding reagents and while diluting strong acids? How would protective devices minimise risks in these cases?
Answer :
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One should remember regarding handling test-tubes while heating or adding reagents and while diluting strong acids are :
1. Cool water in an ice bath when using concentrated acids. This step is only necessary when you'll be handling extremely concentrated acid solutions, such as 18M sulfuric acid, or 12M hydrochloric acid. Cool the water you'll be using by keeping it in a container surrounded by ice for at least 20 minutes before the dilution begins.
- For most dilutions, the water can be at room temperature.
2. Add distilled water to a large flask. For projects involving careful measurement, such as titration, use a volumetric flask. For most practical purposes, an Erlenmeyer flask can be used instead. In either case, choose a container that can easily
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