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How does the presence of a chiral carbon atom in a molecule give rise to the existence of a pair of stereoisomers?
Wiki User
∙ 12y ago
Chirality does not give rise to a a pair of stereo-isomers but to a pair of optical isomers.
Optical isomers are identical in every way but one: that the two isomers are mirror images of each other...
they are not superimposeable...
they are defined as + and - or laevo and dextro rotatory (left handed and right handed) because of the effect they have on polarised light. Polarised light is oriented in one plane and passing such light through a laevo rotatory optical isomeric substance it will be rotated through an angle and emerge in a different plane.
In living organisms a higher proportion of one optical isomer over the other occurs.
Substances produced in the lab have more or less equal proportions of each isomer and are called racemic mixtures
A chiral carbon atom is defined as having four differentconstituent atoms or groups of atoms attached to it by means of single covalent chemical bonds.
This confers a status of assymetry to this carbon atom.
Wiki User
∙ 12y ago
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How many monochloroisomers of cyclohexane are possible?
Cyclohexane can form only one mono-substituted alkyl chloride. Because cyclohexane is a symmetrical molecule with only a single type of carbon atom and no stereoisomers will be formed because there are no asymmetric centers, the product will be the same no matter which carbon the chlorine atom attaches to.
When naming hydrocarbons what does the suffix yne indicate about the structure of the molecule?
The meaning is the existence of a triple bond in alkynes.
Is carbon dioxide a macro molecule?
No, as molecule go carbon dioxide is a small, simple molecule.
How does molecule of carbon monoxide differ from a molecule of carbon dioxide?
Carbon monoxide is CO and carbon dioxide is CO2.
How can you say that a carbon in molecule is chiral?
Chiral carbon is the carbon which is connected to four different groups in a molecule.
The word organic signals the presence of what molecule?
Carbon
A substance or a molecule containing carbon-carbon bonds or carbon-hydrogen bonds?
The presence of carbon or hydrocarbons in a molecule usually means it is an organic molecule. Organic molecules are usually more complex than inorganic molecules.
What reactants produce carbon dioxide?
When an organic molecule such as methane or ethanol undergoes complete combustion (in the presence of oxygen) it produces Carbon dioxide and water.
How many monochloroisomers of cyclohexane are possible?
Cyclohexane can form only one mono-substituted alkyl chloride. Because cyclohexane is a symmetrical molecule with only a single type of carbon atom and no stereoisomers will be formed because there are no asymmetric centers, the product will be the same no matter which carbon the chlorine atom attaches to.
When naming hydrocarbons what does the suffix yne indicate about the structure of the molecule?
The meaning is the existence of a triple bond in alkynes.
Are alpha and beta glucose structural isomers?
no they are not. they are stereoisomers(configurational) Structural isomers. isomers that differ in the arrangement literally. so the difference between the cylic glucose molecule that is a ring and the non ring glucose. these two are structural isomers. if molecule A and B have the same molecular formula but look different and are thus arranged differently they are structural isomers. conformational isomers. these are isomers that differ from each other simply by the rotation around a single bond. if molecule B can be twisted around the single bonds to get molecule A then A and B are conformational isomers. configurational isomers (stereoisomers). if molecules A and B do not fall into the above two categories, then they are stereoisomers. these type of isomers differ in the spatial arrangement of atoms. so if molecule A was the mirror image of molecule B then these two molecules would be a type of stereoisomers called (Enantiomers). for alpha glucose the OH group attached to the anomeric carbon is not the same as teh CH2OH group on the other side of the hemiacetal( on the other side of the ether oxygen.). ie. if the OH is axial down then the CH2OH is equatorial up. and vice versa. the molecule is beta glucose when these two substituents are the same in this aspect. both either equatorial or axial. the difference between axial and equatorial is spatial adn in the arrangement of atoms connected to the carbon ring and solely a difference in this aspect (alpha or beta) means the molecules are stereoisomers.
Is glucose a two carbon molecule?
No, it is a six-carbon molecule.
Is carbon dioxide a macro molecule?
No, as molecule go carbon dioxide is a small, simple molecule.
How does molecule of carbon monoxide differ from a molecule of carbon dioxide?
Carbon monoxide is CO and carbon dioxide is CO2.
Is carbon a water molecule?
No, water molecules are made of Hydrogen and Oxygen, there is no Carbon.
What element is required to be a part of a molecule to make that molecule organic?
Carbon and hydrogen.
How can you say that a carbon in molecule is chiral?
Chiral carbon is the carbon which is connected to four different groups in a molecule.
