chem 31.1 experiment 1
DESCRIPTION
chmTRANSCRIPT
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MTh, 2:30-5:30 PM
Group #2Keith Gabriel AmanoSandre Rose Rosales
Nichole Jane Villamor
Kevin Zabala
EXPERIMENT NO. 1
Differences Between Organic And Inorganic Compounds And
Tests For Elements Found In Organic Compounds
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OBJECTIVESOBJECTIVES
2. To observe some of the fundamental differences in properties of organic and inorganic compounds
To determine the properties of organic and inorganic compounds upon heating, in conductivity, and in ionization
1. To learn the tests used to identify the elements present in organic compounds
To be able to perform combustion, addition of strong base and heating, and Belstein Test properly
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OBJECTIVESMETHODOLOGY
Tests for Elements Present in Organic
Compounds
Differences in Properties of Organic
and Inorganic Compounds
• Combustion
• Addition of a Strong Base and Heating
• Belstein Test
• Differences Upon Heating
• Differences In Conductivity
• Differences In Ionization
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C3H8 (g) + 2O2 (g) 3C(s) + 4H2O(g)
OBJECTIVESRESULTS
Combustion
Figure 1.1 Reaction Between Propane and Oxygen
2Ca(OH)2 (l) + O2 (g) 2CaO(s) + 2H2O(g) Figure 1.2 Reaction Between Limewater and Oxygen
2Ca(OH)2(l) + CO2(g) 2CaCO3(s) + 2H2O(g)Figure 1.3 Reaction Between Limewater and Carbon Dioxide
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2NaOH(a) + (NH2)2CO(s) Na2CO3(s) + 2NH3(g)
OBJECTIVESRESULTS
Addition of a Strong Base & Heating
Figure 1.4 Reaction Between Sodium Hydroxide and Urea
Figure 1.4 Reaction During the Albumin Test
NaOH Na+ + OH -
2Na+ + S Na2S addition of egg albumin
Na2S 2Na+ + S2-
S2- + Pb2+ PbS addition of lead acetate
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+hea
t
OBJECTIVESRESULTS
copper halides
Belstein Test
Figure 1.6 Reaction of Halides in the Belstein Test
Table 1.1 Results for Belstein Test
Substances Color of Flame
HCl, KI, CHCl3, KBr green flame
saliva and rubbing of hands
no color
NaCl + O2 no reaction
Differences Upon Heating
Figure 1.7 Reaction of NaCl Upon HeatingFigure 1.8 Reaction of Sucrose Upon Heating
C12H12O11(s) 12C(s) + H2O(l)
C12H12O11(s) + O2(g) CO2(g) + H2O(g)
Figure 1.9 Reaction of Sucrose With Oxygen
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NaCl conductivityapparatus
OBJECTIVESRESULTS
Differences in Conductivity
+
Figure 1.10 Conductivity Test for NaCl
NaCl Na+ + Cl–
Figure 1.11 Ionization of NaCl
+
benzene
Figure 1.12 Conductivity Test for Benzene
+
KIFigure 1.13 Conductivity Test for KI
KI K+ + I–
Figure 1.14 Ionization of KI
+
Figure 1.15 Conductivity Test for Sucrose
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Figure 1.16 Reaction Between Sodium Chloride and Silver Nitrate
NaCl(aq) + AgNO3(aq) AgCl(s) + NaNO3(aq)
OBJECTIVESRESULTS
Differences in Ionization
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CONCLUSION
Organic compounds are compounds of carbon that usually contain hydrogen and other elements such as oxygen, nitrogen, sulfur and halogens (F, Cl, Br, or I).
Organic compounds have low melting and boiling points, are bad conductors of electricity, and hardly ionize in solutions while inorganic compounds are the opposite.
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REFERENCES
www. wisegeek.org/what-is-soot.htmhttp://www.ausetute.com.au/combusta.htmlhttp://www.gcsescience.com/itestcarbondioxide.htmhttp://www.askmefast.com/what_happens_when_albumin_is_added_to_naoh_and_lead_acetate-qna696229.html#q3752828http://chemistry.stackexchange.com/questions/13923/mechanism-for-the-beilstein-testhttp://chemistry.tutorvista.com/organic-chemistry/organic-compounds.htmlhttp://www.meritnation.com/ask-answer/question/chloroform-does-not-give-any-precipitate-with-agno3-why/chemistry/5268014