Name : Sri
Mundarti
NIM :
RSA1C111017
Class :
Chemistry PGMIPABI 2011
1.
a. Explain how the
concept of organic compoundsfrom petroleum can be used as a fuel for vehicles
such as car, motor bike, including aircraft.
b. explain it how the idea of chemical compounds
from petroleum can be used to make clothing and plastics and material needs of
ather human lives.
2.
Explain why the
hydrocarbons that are asymetrical or chiral have a variety of benefit for human
being, and describe how does it the chiral centers can be formed
3.
When 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.
4.
Aromatic compounds are
marked by ease of adjacent electrons conjugated. Please explain why an
unsaturated compound which highly conjugated but is not aromatic.
Jawab:
Answer:
1. A.
1. A.
As we know that the Olefin (alkanes-alkenes) are the most important petrochemical ingredients. Among the most important olefin (most produced) is ethylene (ethene), propylene (propene), butylene (butene), and butadiene. Olefins are generally made of ethane, propane, naphtha, or gas oil (gas-oil) through the process of cracking (cracking). Ethane and propane can be derived from natural gas or from petroleum fractions; naphtha derived from petroleum fractions with molecular C-6 to C-10, while the gas-oil derived from petroleum fractions with molecules of the C-10 to C-30 or C-30. In addition to using petroleum cracking process can be used to create a lot of materials useful for life. For example, gasoline, diesel and others. its conversion process using distillation or refining processes. Distillation itself is a chemical separation methods based on differences in the speed or ease evaporate (volatility) of material in the 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.
For your information, lubricating oils currently on the market derived from petroleum processing. Crude oil (crude oil) petroleum drilling results at the bottom of the earth containing various hydrocarbons with boiling points vary. Later, various hydrocarbons contained in crude oil are separated using distillation techniques storey (refining) based on differences in their boiling points. So that will be obtained in different products.
1. B
Since most of the plastic used is a type of polyethylene plastic. There are two types of polyethylene, which is high density polyethylene (HDPE) and low density polyethylene (LDPE). HDP is widely used as plastic beverage bottles, while LDPE for plastic bags.
Apparently, when polyethylene is heated will form a compound liquid hydrocarbons. This compound has a similar shape candle (wax). That means it can be concluded that the manufacture of plastic and clothing that has the form and structure containing hydrocarbons must be made using petroleum made in such a way. Because polyethylene or PE (Poly Eth, Tygothene, Pentothene) is a polymer of ethylene (CH2 = CH2) which is a hydrocarbon that can be found in petroleum. Only we can make it after going through many processes.
2. Hydrocarbons with asymmetrical shape occurs only when a chiral molecule compounds, which may not coincide with the molecular mirror reflection. The word chiral comes from the Greek "Cheir" meaning hand. Hydrocarbons are compounds composed of carbon that is only the elements carbon and hydrogen elements. These compounds can be made into a lot of different forms. Interestingly the discussion of chiral hydrocarbons, changed slightly the shape of the molecule will be able to change the nature and benefits.
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. The molecule on the left (which has a plane of symmetry) is called achiral. Only chiral molecules have optical isomers. So the core is formed because of the unique chiral carbon atom has four valence electrons hands since. So the bias binding either 4 atoms of different or the same.
3. I think ehilene used to ripen fruit can also be used as fuel for merupkan ethylene derivative of alcohol that also contain hydrocarbons. It's just that we need to make it again into another form or with the addition of other substances.
4. It said aromatic compound when he has at least one cicncin aromatic compounds may indeed have a bias bond forming into aromatic compounds. But the double bond does not form aromatic rings. This may be caused because the compound is not a compound consisting of six carbon atoms that form a chain C benzene. He's just a double bond in the form of compounds or the other straight. Bias is also due to less than 6 carbon atoms so it can not form a chain of benzene.
