Chemical Formulas and Chemical Equations
Purpose: To study different types of chemical equations and to conclude if a reaction occurs when two compounds are combined. When reactions occur you should then be able to predict the products which are formed.
Procedures for Series A-E
Series A: Four test solutions and four reagents are added together making 16 reactions. You note the appearance of all the solutions before and after the reactions and also noting if precipitates are formed. Results found in data tables.
Series B: Tow drops of reagent, 2M HCl, is added to each of the three test solutions and one test solid noting the results. Results found in data tables.
Series C: One drop of .2M NH (aq) is added to five drops of each of the four test solutions and results are recorded. Next you add five more drops of ammonia solution to each of the test solutions, mix contents and record results.
Finally, you add five more drops of 6M NH (aq) to each solution, mix and record results. Results found in data tables.
Series D: Five drops of 6M HCl is added to each of the four solid metals.
Results found in data tables.
Series E: Add six drops of each of the four test acid solutions to the four test tubes.
Adding two drops of the universal indicator you note the pH of each test solution using a calibration card. You then add three drops of 1M NaOH reagent to each of the solutions, stir, and note pH level. Add another three, then six, then another six drops of NaOH to each solution stirring and noting the pH each time. Results found in data tables.
Conclusion: When combining an acid and a base, a salt, gas, and water is formed. When combining a...