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It depends on which reaction is used to create the ester. When catalyzing a carboxylic acid with a strong base such as NaOH, then using an alkyl halide, the oxygen is from the acid.
R-COOacidH + NaOH -> R-COO-acid + R'X ->R-COOacidR'
When using a carboxylic acid with an alcohol or an acid chloride with an alcohol, the oxygen originates from the alcohol.
R-COOacidH + R'OalcoholH + HCl -> R-COOalcoholR'
R-COOacidCl + R'OalcoholH + Pyridine -> R-COOalcoholR'
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Molecule with three oxygen atom joined together?
three atoms of oxygen combined together gives ozone
What is the name of an An organic compound in which the hydrogen atom of a carboxyl group is replaced by a carbon atom?
ester
What is the co valency number of oxygen?
Two, unless an oxygen atom is bonded to another oxygen atom or to a fluorine atom.
What kind of charge would the oxygen atom have compared to the oxygen?
The oxygen atom is neutral.
In a water molecule each hygrogen atom shareswhat with the oxygen atom?
Each hydrogen shares one electron with the oxygen atom.
What is formed if 2 electrons are added to an oxygen atom?
Oxygen atom + 2 electrons gives Oxide, an oxygen ion (charge: 2 minus)In chemical symbols: O + 2e- --> O2-
Molecule with three oxygen atom joined together?
three atoms of oxygen combined together gives ozone
What are the number of protons in each of the three isotopes of oxygen?
The number of protons is what gives an atom its identity. Any atom with 8 protons is oxygen, regardless of the number of neutrons.
What is the name of an An organic compound in which the hydrogen atom of a carboxyl group is replaced by a carbon atom?
ester
How many protons are ther in an atom of an oxygen?
Oxygen has 8 protons in the atom.
Does oxygen contain one atom of nitrogen?
no oxygen is an element of one atom and that's an oxygen atom
What atom does each molecule of H2O contain?
two hydrogen and 1 oxygen, the chemical formula is H2O which gives you the answer
What is the co valency number of oxygen?
Two, unless an oxygen atom is bonded to another oxygen atom or to a fluorine atom.
What kind of charge would the oxygen atom have compared to the oxygen?
The oxygen atom is neutral.
What two factors determine the color of an aurora?
The height above the earth that the charged particle from the sun collides with the gas atom.Which gas atom is involved in the collision.High up oxygen emits redLower oxygen gives greenLow down oxygen gives out no lightNitrogen gives out blue or red wherever it is.
Is an oxygen atom have twice the mass of a sulphur atom?
No. On average a sulfur atom is twice the mass of an oxygen atom.
Does an oxygen atom weight the same as a hydrogen atom?
an oxygen and a hydrogen atom do not weight the same
