Posted: September 13th, 2017

Chemistry report follow steps and plot the data.

Chemistry report follow steps and plot the data.

1    Descriptive title that refers to the main point(s) in the report and is not the one from the manual.   Also includes Partner, TA, and section.  (0, 0.5, 0.75, 1)    ?
Abstract        Typically 150-250 words.  Present tense.
3    Clear statement of purpose/question/ or problem addressed    ?
3    Summary of method, data, results, or findings.    ?
3    Stand alone concise, clear, organized representation of the article –     ?
0    9    Abstract Total.    ?
Introduction
3    Is able to identify rationale for experiment -Clear expression of scientific objective for experiment    ?
3    Introduction of chemical reaction to be studied with Eq. number.  Mentioned in text
3    Clear explanation of theory behind determination of K and getting ?H, ?S, and ?G from K.
1    Brief statement of method used
3    Is able to identify relevant hypothesis     ?
3    Overall quality of the introduction and setup for the full report.    ?
0    16    Introduction Total    ?
Experimental
1    Citation of lab manual    ?
3    Brief, clear description of the procedure so the reader need not have the manual to understand the data and discussion.     ?
1    Details of any changes (omissions/ additions).  (0, .5, .75, or 1)    ?
3    Written in paragraph form, not a list of steps, and in own words – not copied from manual.    ?
0    8    Experimental Total    ?
Data & Results        The Evidence
3    Well written paragraph(s) introducing reader to the data presented and referring to the figures and tables    ?
3    Data presented in table form for all solvents (1 or several tables).   Include captions    ?
3    Ln (Ksp) vs. 1/T plot with fit, labels, and caption    ?
3    ?G  vs. T plot with fit, labels and caption    ?
3    ?H and ?S determined from the above plots.  Compare in general sense to energetics and entropy expectations in the dissolution process [Check – some may put this in the discussion section]    ?
3    s vs.  T 3 plots of water, 1m, and 2m for each solvent     ?
3    Equations presented as necessary to follow the transition from data to results in logical progress.    ?
deduction (-2)    Students that did not attend lab must identify source of data and make it clear they did not measure it.
3    Overall quality. Section is mostly text.  This section is a narrative of the data. Allows readers to easily follow the data and validate its accuracy.    ?
0    24    Data & Results Total    ?
Discussion & Conclusion        The Claim
3    Do solubilities at constant temperature follow simple pattern.  Compare with Theory/expectations    ?
3    Does it seem to matter which common ion is present in the solvent?  Depends on results obtained but shouldn’t matter    ?
3    Is KNO3 solubility behavior different in NaCl  – describe.  (depends on results)    ?
3    A detailed and specific discussion of the results and uncertainties.
3    Describes if the evidence supports the scientific claim or conclusion.
3    Provides additional evidence that supports claim. (literature)
3    Is able to identify assumption and uncertainties in equipment and propagation of uncertainties through calculations
3    Describes how these uncertainties impact the final answer (too high/too low/why?)
3    Discusses if the experiment worked well and describes how the design of the experiment or their execution of the experiment could be improved.
3    Correctly state if hypothesis is supported or not,  Revised hypothesis if necessary that fits evidence.
0    30    Discussion Total    ?
References        Other support
1    Listed three or more reliable references (not yahoo or Wikipedia) (manual, can be textbook)    ?
1    Provides a valid citation for the known support of scientific claim.      ?
deduction    Deduction:  Information from sources not cited.  ( paraphrased – no in-text citation  but referenced -2, (Large direct quote with quotations & in-text citation -2) direct quote but did not in-text site but did reference-4 , direct quote/copy not referenced –  AIV process)    #VALUE!
3    Used sufficient in-text citations     ?
0    5    References Total    ?
Overall        Other Overall considerations and Total
3    Proper use of spelling, grammar, and punctuation    ?
3    Report Organized  (lacks coherence (0) , minimal organization (1), some areas of difficulty (2), Org. enhances ideas (3 ))    ?
3    Writing has good flow and sentence fluency
Other Deduction or addition (Explain in comments)
0    9    Overall  Consideration Total
0    102    Report Overall Grade    ?
0.0%        Report Percentage Before late penalty
0    25    Scale to 25  (pnts./25 before late penalties)

Late Points
0    0    Days Late
0    0    Point deduction for late work (calculated automatically).
0.0        total points
0.00    25    Final Report Points out of 25
0.0%    100.0%    Final Report percentage out of 100%

Solvent    Mass Solvent (g)    Mass KNO3 (g)    T (K)
1 M NaNO3    20.006    9.003    305.1
12.005    311.5
15.004    318.1
17.998    325.2
2 M NaNO3    20.010    9.010    305.1
12.010    313.5
15.010    321.8
18.016    329.6
1 M NaCl    20.164    9.053    342.3
12.100    346.0
15.271    347.0
18.296    348.5
2 M NaCl    20.425    9.000    305.2
12.000    311.2
15.000    317.3
18.000    323.1
1 M KCl    20.520    9.001    305.4
12.009    313.4
15.028    319.8
18.035    327.8
2 M KCl    20.000    9.037    310.9
12.117    320.8
15.147    329.0
18.157    333.0