Why does solubility decrease with increase in carbon chain?
Table of Contents
- 1 Why does solubility decrease with increase in carbon chain?
- 2 Why does the miscibility of aldehydes and ketones decrease with increase in carbon chain of alkyl group?
- 3 Why does solubility of aldehydes decrease?
- 4 Why small aldehydes and ketones are soluble in water?
- 5 Why are aldehydes and ketones with one to four carbon atoms soluble in water?
- 6 Which aldehydes and ketones would you expect to be water soluble?
Why does solubility decrease with increase in carbon chain?
With the increase of the carbon atoms the electron density is distributed in such a way that this electronegativity decreases. The molecule becomes more neutral and the solubility in polar solvents decreases.
Why does the miscibility of aldehydes and ketones decrease with increase in carbon chain of alkyl group?
As we know there is an increase in the size of the alkyl group with increase in molecular mass, so there is a decrease in solubility with an increase in molecular mass. Due to this phenomenon, the molecules having a higher alkyl group are practically insoluble.
How does the number of carbon atoms affect the solubility of aldehydes and ketones in water?
The solubilities of both aldehydes and ketones in water decrease as the number of carbon atoms increases.
Why the solubility of aldehydes and ketones decreases rapidly on increasing the length of alkyl chain?
The positive hydrogen atom in a water molecule is attracted to one of the lone pairs on the oxygen atom of an aldehyde or ketone forming a hydrogen bond.As chain lengths increase, the hydrocarbon part of the molecules hinders the hydrogen bonding between.
Why does solubility of aldehydes decrease?
The reason for the solubility is that although aldehydes and ketones can’t hydrogen bond with themselves, they can hydrogen bond with water molecules. This makes the process energetically less profitable, and so solubility decreases.
Why small aldehydes and ketones are soluble in water?
Small aldehydes and ketones are miscible with water in all proportions, because they can form hydrogen bonds with water. They have to break the strong hydrogen bonds between water molecules without replacing them with anything as good. This makes the process energetically less favourable, so solubility decreases.
Why does the solubility of aldehydes and ketones in water decrease with increase in molecular mass?
The oxygen atom of the carbonyl group engages in hydrogen bonding with a water molecule. The solubility of aldehydes is therefore about the same as that of alcohols and ethers. As the carbon chain increases in length, solubility in water decreases.
Which action is the best action for the solubility of aldehydes and ketones in water?
Aldehydes and ketones cannot form hydrogen bonds with themselves, but they can have hydrogen bonds with water molecules and this forms the basis for good solubility of aldehydes and ketones in water. This is also because of dispersion forces and dipole-dipole interactions.
Why are aldehydes and ketones with one to four carbon atoms soluble in water?
Aldehydes and ketones contain a polar carbonyl group (carbon-oxygen double bond), which has a partially negative oxygen atom and a partially positive carbon atom. Because the electronegative oxygen atom forms hydrogen bonds with water molecules, aldehydes and ketones with one to four carbons are very soluble.
Which aldehydes and ketones would you expect to be water soluble?
Formaldehyde, acetaldehyde, and acetone are soluble in water. As the carbon chain increases in length, solubility in water decreases. The borderline of solubility occurs at about four carbon atoms per oxygen atom. All aldehydes and ketones are soluble in organic solvents and, in general, are less dense than water.
Which action is the best action for the solubility of aldehyde and ketone in water?