Frequently Asked Questions...
chemistry lab?
I have chemistry lab this week and we are going to try to inflate Airbags with Baking soda (NaHCO3) and Vinegar (CH3COOH or C2H4O2) Its going to be for a test grade, we need to make it inflated correctly with enough in it to make the reaction work and fill up the bag with CO2, How much of each should i mass out? We are also using ziploc bags
Answer:
The chemical reaction between baking soda and vinegar is multi stepped.
Vinegar is acetic acid: CH3COOH
Baking soda is sodium bicarbonate: NaHCO3
Mixing the two is simply and acid base reaction.
CH3COOH + NaHCO3 ---> CH3COONa + H2CO3
That last product is carbonic acid which quickly decomposes into
carbon dioxide and water:
H2CO3 ---> H2O + CO2
The CO2 is what you see foaming and bubbling in this reaction.
Since I don't know the size of your ziploc bag, nor do I know the molarity of your acetic acid(vinegar), I found a website for you that illustrates and lists the amount of baking soda and vinegar you need to inflate a balloon.
Good luck on your lab
Chemistry Lab
Organic Chemistry Lab Demo: Distillations
Chemistry Lab Equipment Uses
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Chemistry lab is the place where sensitive liquids are mixed, researched and experimented for derivations and possible inventions. Like every other lab chemistry lab too has certain special tools and equipments for exclusive chemistry based experiments. Mentioned below are the various chemistry lab equipments and their respective uses. Take a look:
Beaker
Beakers refer to the large, glass sized cups used for holding large amounts of solution. Generally, these are made up of plastic or tempered glass and has wide mouth for pouring the solutions easily . Most often these beakers are used for experiments like chromatography.
Vials
Vials are the smaller versions of beaker and are used for holding or measuring small amount of liquids. These are generally used when a liquid is needed to be added in the form of small droplets.
Test Tube
Test tubes refer to the long glass tubes used for observing reactions or heating chemicals.
Pipets
Pipets are the tiny disposable equipments used for adding droplets of a liquid in another vessel like a beaker, flask or vial. These tools have to be discarded after each use as there's no way to clean it thoroughly after a use.
The Erlenmeyer Flask
The Erlenmeyer flask resembles a lot to a beaker, with the only difference that it has a narrow mouth opening so as to put a stopper onto its mouth. It is used for heating chemicals and maintaining the vapor within the vessel.
Centrifuge
A centrifuge is an equipment which spins at such a rapid speed that the materials within the vial solutions separate. It so happens that the heavier objects settle down to the bottom of the vial while the lighter material afloat at the top. It is often used while doing a DNA analysis.
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For more information regarding laboratory equipments, kindly log onto www.laboratoryequipmentworld.com. An informative online knowledge source and B2B marketplace regarding various types of laboratory equipments for medical, chemical, physics lab etc. Get access to free product catalog & suppliers directory. Also find information on global trade events, business trade leads and post free trade leads. This is an useful B2B marketplace for laboratory equipment manufacturers, suppliers, exporters and wholesalers.
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