Question

Ответьте, пожалуйста! Когда можно использовать стеклянную химическую посуду, а когда нельзя?

Answer 1

можно использовать после тщательной отмывки тары

Answer 2

When can glassware be used for chemical experiments?

Glassware is commonly used in chemical experiments due to its transparency, inertness, and resistance to heat and chemical reactions. However, there are certain factors to consider when deciding whether to use glassware for a specific chemical experiment.

Glassware can generally be used in the following situations:

1. Non-reactive substances: Glassware is suitable for handling non-reactive substances or substances that do not react with glass, such as water, salts, and many organic solvents.

2. Low temperatures: Glassware can be used for experiments involving low temperatures, as it has good thermal stability and can withstand rapid temperature changes.

3. Standard laboratory procedures: Glassware is commonly used for standard laboratory procedures, such as measuring volumes, mixing solutions, and performing titrations.

4. Observation: Glassware is often used for observing reactions or changes in color, as it provides a clear view of the contents.

However, there are situations where glassware may not be suitable for chemical experiments. Some factors to consider include:

1. Reactivity: Glassware may not be suitable for highly reactive substances or substances that react with glass, such as strong acids (e.g., hydrochloric acid) or strong bases (e.g., sodium hydroxide). In such cases, alternative materials like plastic or specialized glassware may be used.

2. Extreme temperatures: Glassware may not be suitable for experiments involving extreme temperatures, such as very high temperatures or rapid temperature changes. In these cases, materials like quartz or metal may be more appropriate.

3. Pressure: Glassware may not be suitable for experiments involving high pressure, as glass can be brittle and prone to breaking under pressure. In such cases, pressure-resistant materials like stainless steel or specialized pressure vessels may be used.

4. Specialized experiments: Some experiments require specialized glassware designed for specific purposes, such as distillation, reflux, or vacuum filtration. In these cases, it is important to use the appropriate glassware for the specific experiment.

It is always important to consult laboratory guidelines, safety protocols, and the specific requirements of the experiment before deciding on the use of glassware. Safety should be the top priority when selecting the appropriate materials for chemical experiments.