Editing Questions For Stoichiometry (Acid And Carbonate) Lab
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These questions comes from the Stoichiometry Lab (Chem Rxn of Potassium carbonate and HCl).<br> <br> There are questions at bottom of Lab manual (procedure) sheet. Those questions are part of your calculation section, not as a separate Question/problem section.<br> <br> <br> 1a. When you added the Hydrochloric acid to the solid Potassium carbonate, what observation did you make? _____________________________________________<br> <br> 1b. Give me the chemical name and chemical formula of the compound that produced this observation.<br> <br> <br> <br> 2. How did you know that the reaction stopped (that all the Potassium carbonate has been used up).<br> <br> <br> 3. From your balanced chemical reaction, there were two more products besides the one that made the observation in Question 1 above. To separate those two products, what step (procedure) did you use? (Hint: what is the next step that you did in the lab after you reacted all the potassium carbonate)<br> <br> <br> <br> 4. Besides the crucible, what was the other substance that you had in the crucible for your final weighing? <br> Chemical name of this substance: _______________________<br> <br> Chemical formula: _______________________<br> <br> Phase (state) of matter: ________________<br> <br> <br> 5. Was your actual /experimental yield (Circle one:) greater than, less than, or equal to your stoichiometric yield. Besides having weighing problems, give one explanation that the two yields were the NOT same.<br> <br> <br> <br> <br>
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