How do you measure the size of a molecule of oleic acid class 11?

How do you measure the size of a molecule of oleic acid class 11?

The oleic acid drop spreads into a thin, large and roughly circular film of molecular thickness on water surface. Then, we quickly measure the diameter of the thin film to get its area A. Suppose we have dropped n drops in the water.

How is the size of a molecule measured?

Molecular size is a measure of the area a molecule occupies in three-dimensional space. Plug in the molecular values for the density equation. Multiple both sides of the equation by v over 1. This removes the fraction and results in the equation v x p = m.

What is the molecule of oleic acid?

Oleic acid

PubChem CID 445639
Chemical Safety Laboratory Chemical Safety Summary (LCSS) Datasheet
Molecular Formula C18H34O2 or C8H17CH=CH(CH2)7COOH
Synonyms oleic acid 112-80-1 cis-9-Octadecenoic acid (Z)-Octadec-9-enoic acid cis-Oleic acid More…
Molecular Weight 282.5

How will you estimate the size of oleic acid?

To this, we add one drop of oleic acid. The drop quickly spreads into a thin, large circular film of molecular thickness. This is the oleic acid molecules standing on their hydrophilic ends. We can measure the diameter of this circle using which we can calculate the area ‘A’.

Are molecules different sizes?

Molecules have size and different molecules are different sizes. That is the total weight of all of the atoms in the molecule. So water, which is made up of two hydrogen atoms (1 atomic mass unit each) and one oxygen atom (16 atomic mass units) has a molecular weight of 18 (well, 18.01528 to be exact).

Is oleic acid harmful?

Adverse effects have been documented in some research of oleic acid, however, since both oleic and monounsaturated fatty acid levels in the membranes of red blood cells have been associated with increased risk of breast cancer, although other research indicates that the consumption of the oleate in olive oil has been …

Is oleic acid safe?

When taken by mouth: Oleic acid is LIKELY SAFE when used in food amounts.

Is oleic acid a triglyceride?

Oleic acid is the most common monounsaturated fatty acid in nature. It is found in fats (triglycerides), the phospholipids that make membranes, cholesterol esters, and wax esters. Triglycerides of oleic acid comprise the majority of olive oil (about 70%). Karuka contains 52.39% oleic acid.

What is Parallax methods?

The parallax technique determines distance by measuring the angle of apparent shift in an object’s position, as seen from opposite sides of Earth’s orbit around the Sun.

Is oleic acid denser than water?

It is the most common fatty acid in nature….Oleic acid.

Density 0.895 g/mL
Melting point 13 to 14 °C (55 to 57 °F; 286 to 287 K)
Boiling point 360 °C (680 °F; 633 K)
Solubility in water Insoluble

How to calculate the size of an oleic acid molecule?

Assuming that the base of the molecule is a square, find the area of the base of the molecule in cm 2. Use that result to calculate the number of molecules in the spot of oleic acid. Calculate the mass of one molecule using the mass of oleic acid in one drop (the mass of oleic acid in the spot) and the number of molecules.

Why does oleic acid stand up on its own?

When placed on water oleic acid molecules will stand up and support one another on end because of attractive forces between the hydrophobic parts of the molecules. If oleic acid is dropped onto the water we make the assumption that it spreads out to a thickness of only one molecule.

Which is part of oleic acid is hydrophobic?

Fatty acid molecules such as oleic acid are interesting because they have parts which are hydrophilic and parts which are hydrophobic. In the picture of oleic acid, note that the oleic acid molecule is standing on the –OH end of the molecule.

What is the stereoisomer of oleic acid called?

The stereoisomer of oleic acid is called elaidic acid or trans-9-octadecenoic acid. These isomers have distinct physical properties and biochemical properties. Elaidic acid, the most abundant trans fatty acid in diet, appears to have an adverse effect on health.

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