Why is sodium hydrogen carbonate added to the beaker in the preliminary setup?
Understand the Problem
The question is asking for the reasons behind the addition of sodium hydrogen carbonate in a preliminary setup, likely in a scientific experiment. The answer would involve discussing the chemical properties of sodium hydrogen carbonate and its role in the specific context of the experiment or setup.
Answer
It reacts with acids to produce salt, carbon dioxide, and control the reaction environment.
Sodium hydrogen carbonate is added to the beaker in the preliminary setup to react with hydrochloric acid (HCl), producing salt, carbon dioxide, and water. It is often used in chemical setups to create a controlled reaction environment, as the release of CO2 gas can serve specific experimental purposes such as producing a neutral pH or acting as a buffer.
Answer for screen readers
Sodium hydrogen carbonate is added to the beaker in the preliminary setup to react with hydrochloric acid (HCl), producing salt, carbon dioxide, and water. It is often used in chemical setups to create a controlled reaction environment, as the release of CO2 gas can serve specific experimental purposes such as producing a neutral pH or acting as a buffer.
More Information
In many laboratory experiments, sodium hydrogen carbonate (baking soda) is employed to neutralize acids or maintain a specific reaction environment by evolving CO2 gas. This helps in the careful control of reaction conditions such as pH.
Tips
A common mistake is adding too much sodium hydrogen carbonate, which can lead to excess CO2 production and affect the reaction or experiment adversely.
Sources
- Lab Formation of a salt Adjusted (docx) - CliffsNotes - cliffsnotes.com
- Hook - LAB 7 Formation of a Salt Please pass the sodium chloride! It is - studocu.com
- 7: Mole Ratios and Reaction Stoichiometry (Experiment) - chem.libretexts.org
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