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Cinzia Muzzi - Chemistry

Chemistry 1A Laboratory

Safety Document (All Students must sign and turn in on first day)

On-Line Lab Manual

 

Experiment 1

Laboratory Notebook/Prep

Read Experiment 1A- Measurements lab found in the on-line lab manual (link above). There is no notebook lab prep for this experiment; however, on a separate sheet of paper briefly type up the answers to the following three questions. 

1) What is the difference between precision and accuracy. Can a set of measurements be precise without being accurate?

2) What are significant figures?  Why do we need pay attention to them in measurements?

3) When graphing a straight line the equation for the line is y = mx +b.  What does each value in this equation represent? Example: b represents the y-intercept which is the point at which the line crosses the y axis.  

Laboratory Report

Print and turn in the worksheets that are provided in the on-line lab manual pdf for this experiment.  They will be due at the end of the laboratory period.

 

 

Experiment 2

SAFETY QUIZ IN LAB 

Laboratory Notebook/Prep

Read Experiment 1A- Nomenclature lab found in the on-line lab manual (link above). There is no notebook lab prep for this experiment; however, on a separate sheet of paper briefly type up the answers to the following three questions. 

1) What is the difference between an ionic compound and a molecular compound?

2) What is the Arrhenius definition of an acid and of a base?  How do you identify an acid?  How do you identify a base?

 

Laboratory Report 

Print and turn in the worksheets that are provided in the on-line lab manual pdf for this experiment. They will be due at the end of the laboratory period.

 

Experiment 3

SAFETY QUIZ DUE

Laboratory Notebook/Prep

Read Experiment 1A- Hydrate lab found in the on-line lab manual (link above). Prepare the abstract and procedure in your laboratory notebook as discussed in lab and as outlined in the syllabus. Staple your duplicate copies from your notebook and turn them in at the beginning of class.

 

Laboratory Report 

Illustrate one set of sample calculations for both the known and unknown in your laboratory notebook. Report the pertinent information for the other three trials of the known and unknown.  Turn in the duplicate copies of your data tables and calculations at the end of the second lab period. 

 

Experiment 4

 

Laboratory Notebook/Prep

Read Experiment 1A- Precipitate lab found in the on-line lab manual (link above). Prepare the abstract and procedure in your laboratory notebook. Staple your duplicate copies from your notebook and turn them in at the beginning of lab.

Additionally for this experiment you will need to PRINT PAGE 9. All other data and calculations will be recorded in your laboratory notebook. 

Laboratory Report 

You will have Page 9 signed off in lab for Part I.  For Part 2 perform the calculations as described in class and provide a brief conclusion as described in class.  Both the calculations and conclusion should be done in your laboratory notebook.  Turn in Page 9 and the duplicate copies of your data, calculations and conclusion.  

 

Experiment 5

 

Laboratory Notebook/Prep

Read Experiment 1A- Reactions lab found in the on-line lab manual (link above). There is no notebook lab prep for this experiment; however, on a separate sheet of paper briefly type up the answers to the following three questions. 

1) Give an example of a double displacement reaction.

2) Find the solubility rules in your textbook.  Which types of ionic substances are generally insoluble?   Which types of ionic substances are always soluble?

 

Laboratory Report

The Laboratory report for this experiment is completed in class.

 

Experiment 6

 

Laboratory Notebook/Prep

Read Experiment 1A- Conductivity  lab found in the on-line lab manual (link above). There is no notebook lab prep for this experiment.  Print up the worksheets and data tables. Answer the following questions for your pre-lab. Type your answers on a separate sheet of paper.

1) Indicate whether the following are strong, weak or non electrolytes: CH3CH2OH, H3PO4, HCl, C2H6O2.

2) Write out equations for the dissociation of of NaCl (aq), CaCl2 (aq), and AlCl3 (aq)

 

Laboratory Report

The Laboratory report for this experiment is completed in class.

 

Experiment 7

 

Laboratory Notebook/Prep

Read Experiment 1A- Titration lab found in the on-line lab manual (link above). Prep this lab in your laboratory notebook.  All data and calculations will be placed in your laboratory notebook. Make sure that the duplicate copies are clearly legible because these will be turned in with you typed written full report.

 

Laboratory Report

This lab report is your full 30pt lab report.  It will be due two weeks after the completion of the wet chemistry (No exceptions) (11/28).  Details regarding the full lab report will be provided in lecture, but the basic outline for the report can be found in your syllabus.  Make certain that one sample calculation for each type of calculation is shown.  Also make certain that the following are also covered in your conclusion.

Calculations that must be illustrated.

1) Determine the concentration of your KHP solution using the experimental mass of KHP.

2) Determine the concentration of NaOH solution based on your titrations.  Calculate the Molarity for each of the three trials that agree +/- 0.05mL. You only need to show the calculation for one trial and report the molarity for the other two. Find the average Molarity of the NaOH solution.

3) Determine the concentration of acetic acid in vinegar based on your titrations. Calculate the Molarity for each of the three trials that agree +/- 0.05mL.  You only need to show the calculation for one trial and report the molarity for the other two. Find the average Molarity of the acetic acid in vinegar.

4) Using the density of vinegar as 1.005g/mL determine the mass percent of acetic acid in vinegar.

 

Conclusion

1) How does the procedure relate to the theory?

2) How do your results compare to the the known standard?  (Provide a reference.  It is ok to just list the URL)

3) Excluding human error what are the possible sources of error in this experiment?

 

 

 

Experiment 8

 

Laboratory Notebook/Prep

Read Experiment 1A- Calorimetry lab found in the on-line lab manual (link above). There is no notebook lab prep for this experiment.  Print up the worksheets and data tables. Answer the following questions for your pre-lab. Type your answers on a separate sheet of paper.

1) Write out the three reactions that occur in the first part of this experiment with NaOH and HCl.  One of the reactions is only the dissolution of NaOH(s) in water.

2) How might the enthalpy change in this experiment be different for a weak acid versus a strong acid? (Hint: Would you expect the reaction of a weak acid with NaOH to be more or less exothermic than NaOH and HCl?)

 

Laboratory Report

The Laboratory report for this experiment is completed in class.

 

Experiment 9

Laboratory Notebook/Prep

Read Experiment 1A- Redox titration lab found in the on-line lab manual (link above). Prep this lab in your laboratory notebook.  All data and calculations will be placed in your laboratory notebook. Make sure that the duplicate copies are clearly legible.

 

Laboratory Report

The calculations for this lab may be done in your notebook.  The duplicate copies of the data and calculations will be turned in one week after completing the wet chemistry.

 

Experiment 10

 

Laboratory Notebook/Prep

Read Experiment 1A- Hydrogen Line Spectra lab found in the on-line lab manual (link above). There is no notebook lab prep for this experiment.  Print up the worksheets and data tables. 

 

Laboratory Report

The Laboratory report for this experiment is completed in class.

 

 

 



Contact
email icon Email: Cinzia Muzzi
phone icon Phone: 408.864.5790

Chemistry
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Last Updated: 11/15/17