Decomposition of Baking Soda

Chemistry 11|
The Decomposition Reaction of Baking Soda, NaHCO3|
Oscar ShiPeriod 2Laboratory AssignmentDue assignment: 2011/4/14 |

Introduction

The objective of this experiment is to find the veridical chemical equation that governs the manner in which baking washing pa (sodium hydrogen carbonate NaHCO3) decomposes.

When NaHCO3 is rouseed, it decomposes to produce a gas and leaves tooshie a solid. Two possible equations for the decomposition be:

NaHCO3 (s) + heat NaOH (s) + CO2 (g)
NaHCO3 (s) + heat ½ Na2OH3 (s) + ½ H2O (g) + ½ CO2 (g)

Materials and Methods
* electronic balance
* sodium hydrogen carbonate
* ring
* ring stand
* melting pot tongs

* crucible
* crucible lid
* clay triangles

The mathematical function of the Laboratory

1. Put on safety goggles and a testing ground apron.
2. Obtain a clean and dry crucible and lid. Crucibles real slowly adsorb small amounts of water vapour from the air travel and must be heated for a minute or two to get rid of adsorbed water molecules before you stack get an accurate initial multitude for a crucible. Crucibles are usually heated in clay triangles, which in gimmick are set on top of rings inclined to ring stands.
3.



Hot crucibles can blister your bench top, so hot crucibles should be placed on the steel root of your ring stand using your crucible tongs at all times in order to cool down.
4. after(prenominal) the crucible has cooled down, accurately determine the aggregate of your crucible. Record this mass on your date sheet. If a very hot crucible is put on an electronic balance, the balance can be ruined.
5. Put about 5.00 g of sodium hydrogen carbonate in the cool crucible. Once again using the electronic balance, record the mass of the crucible plus baking soda accurately on your data sheet. Using the method of mass by difference, figure out the mass of the sample and go in this into your data sheet.
6. In order to decompose, sodium hydrogen carbonate must be heated until the crucible starts to glow an...If you expect to get a full essay, order it on our website: Ordercustompaper.com



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