Chem 31.1 Experiment 1

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

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

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

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

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

+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

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

Figure 1.16 Reaction Between Sodium Chloride and Silver Nitrate

NaCl(aq) + AgNO3(aq) AgCl(s) + NaNO3(aq)

OBJECTIVESRESULTS

Differences in Ionization

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.

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