COURSE :
ORGANIC CHEMISTRY I
CREDIT :
3 SKS
DAY/ TIME :
TUESDAY, NOVEMBER 13TH 2012-11-13
LECTURE :
Dr. Syamsurizal
1. 1.
a. Explain
how the concept of organic compounds from petroleum can be used as a
fuel for vehicles such as car, motorbike, including air craft.
answer: Petroleum is a mixture of various hydrocarbons. Oil obtained from the bowels of the earth from the remains / fossil animals buried millions of years ago that has turned into oil. The chemical structure of the Earth's oil is very heterogeneous, composed of many hydrocarbon chains of different lengths vary. Therefore, the oil brought to the Earth so that the oil refinery hydrocarbon compounds can be separated by distillation and chemical process engineering lainnya.Disana petroleum processed in stages generate the kinds of fuel earlier. The types of fuel produced is a gas, gasoline, kerosene, diesel, heavy oil (used for lubricating oils, waxes, petrochemical feed process), and the residue (used to fuel steam generating machinery, asphalt, coatings anti-leak ).
Distillation or distillation is a method of chemical separation based on differences in the speed or ease evaporate (volatility) materials.
In distillation, boiling mixture of substances that vaporize, and the vapor is then cooled back into liquid form. Substance which has a lower boiling point will evaporate first.
Distillates are commonly used for petroleum is distilled Fraksionisasiseparate liquid components, two or more, of a solution based on differences in their boiling points. Distillation can also be used to mix with different boiling points of less than 20 ° C and working at atmospheric pressure or the pressure of this column rendah Di warming in stages with different temperatures on each license plate . Warming different aims for the purification of the distillate over plates underneath. Getting to the top, the less volatile liquid.
b. explain it how the idea of chemical compounds from petroleum can be used to make clothing and plastic and material needs of other human lives.
answer :
plastic created by combining monomers of petroleum which include styrene, vinyl chloride, and vinyl acetate and many more. monomers are strung together to form a polymer. Polymer made by linking two monomer chains to do with methods of thermosetting and thermoplastic. In the method of thermosetting, liquid monomer is poured into molds and allowed to cool.
Liquid monomer has a permanent form so that the resulting product is durable.
With the method of thermoplastic, liquid monomer is heated and slowly molded according to the needs.
After that, the product is then cooled to a desired item.
2.
Explain why the hydrocarbons that are
asymmetrical or chiral have a variety of benefit for human being. And describe
how does it the chiral centers can be formed
a Answer :
a asymmetric or chiral hydrocarbons have many benefits for humans because of the structure itself one C atom can bind to 4 pieces of different functional groups. and functional groups can be replaced. so different from different functional groups function.
an organic molecule is called chiral molecules if there is at least one C atom that binds to four different groups. Chiral Molecules have very unique properties, namely optical properties. That is a chiral molecule has the ability to rotate the plane of polarized light in a device called a polarimeter. When four different atoms bonded to the atom. Not terdapatsimetri the molecule.
Molecules that do not have a field called chiral symmetry. The carbon atoms in which four different atoms bonded core called chiral or asymmetric carbon atom.
an organic molecule is called chiral molecules if there is at least one C atom that binds to four different groups. Chiral Molecules have very unique properties, namely optical properties. That is a chiral molecule has the ability to rotate the plane of polarized light in a device called a polarimeter. When four different atoms bonded to the atom. Not terdapatsimetri the molecule.
Molecules that do not have a field called chiral symmetry. The carbon atoms in which four different atoms bonded core called chiral or asymmetric carbon atom.
3. When the ethylene gas produced from a ripe fruit
can be used to ripe other fruits that
are still unripe. How do you idea when the gas is used as fuel gas like methane gas.
a answer :
oon ethylene C2H4 the formula, there is a double bond here. then fuel gases such as methane CH4, the formula does not have a bond. then that ethylene could be like methane the bond shall be terminated by way of oxidation
4. Aromatic
compounds are marked by ease of adjacent electrons conjugated. Please explain
why an unsaturated compound which highly
conjugated but is not aromatic?
a answer :
u Unsaturated compounds do have a bond with a highly conjugated electron. but as we all know that the condition is not only aromatic compounds having a conjugated electron adjacent but uga should have 6 carbon atoms connected by three single bonds and 3 double bonds that criss-cross. Three single bonds and 3 double bonds that criss-cross this is not owned by unsaturated compounds that unsaturated compounds are not aromatic
RIZKI FITRIA
RSA1C111011
Tidak ada komentar:
Posting Komentar