Morgan. Kristin, Sadie December 5. 2012.
Lab Report- Salt. Block 4
In this lab we are going to be combining sodium hydrogen carbonate and hydrochloric acid, to create a reaction, with a product of salt. After these two react, they are held together with bonds. An ionic bond is the electrostatic bond between two ions formed through the transfer of one or more electrons. Therefore, each element would have an electron configuration to determine the sharing of the electrons. Here's a few examples. Na- 1s(2) 2s(2) 2p(6) 3s(1) = 11
Na(+1)- 1s(2) 2s(2) 2p(6)= 10
Cl- 1s(2) 2s(2) 2p(6) 3s(2) 3p(5)= 17
Cl(-1)- 1s(2) 2s(2) 2p(6) 3s(2) 3p(6)= 18
When Sodium(Na) gives away an electron, instead of writing out the whole electron configuration, you could just write [Ne], because it has 10 electrons. The same for Chlorine (Cl), except for it only works when chlorine take an electron, you could use Argon, because the total is now 18 electrons. Now, if you're look ing for valence electrons, which are the electrons they share, you would use the Lewis Dot Diagram. Here's the Lewis Dot Diagram for both Sodium and Chlorine.
The main objectives for this lab, is to be able to not only observe the reaction between NaHCO(3) and HCl, but to also be able to give examples of ionic compounds like NaCl. Also, by the end, you should be able to draw the Lewis Dot Diagrams for Na, Na(+1), Cl, Cl(-1), like we explained in the introduction.
You're now beginning the lab. First, you would weigh a clean and dry, 100 milliliters beaker. Now, place .50 grams for sodium hydrogen carbonate into the clean and dry beaker. After that, add 15 milliliters of distilled water and swirl the solution until you dissolve the sodium hydrogen carbonate(also known as baking soda). If you absolutely need to, add more water until the powder dissolves completely. Next, add 2 to 5 drops of bromothymol blue indicator so the solution becomes the blue color. You can even add a...