Rank these acids according to their expected pKa values. ClCH2COOH ClCH2CH2COOH CH3CH2COOH Cl2CHCOOH In order o…
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Question “Rank these acids according to their expected pKa values. ClCH2COOH ClCH2CH2COOH CH3CH2COOH Cl2CHCOOH In order o…”
ClCH2COOH
ClCH2CH2COOH
CH3CH2COOH
Cl2CHCOOH
In order of highest pka to lowest pka
Answer
The dissociation constant is a numerical value that indicates the amount of dissociation between the substance and its constituted ions. The greater the dissociation constant , the faster the acid will dissociate. If dissociation is slow, then dissociation constant $media_0$ will decrease and acid will become weaker. The

represents the negative logarithm of dissociation constant (base 10).
Electronegativity is the tendency of an atom in covalent bonding that pulls the covalent electron towards it.
Inductive effect

: This is the generation of the partial negative and positive charge over the covalent bonds due to electronegativity differences of the atoms involved. It’s also known as the Inductive effect . The group with a stronger electronegative character (or “inductive effect”) is known as

, and groups that possess electron-donating nature are called

groups.
Below is a representative example of dissociation for carboxylic acid.


It shows the relative strengths of each acid. The

value of stronger acids is smaller than those of weaker acids. However, the

values are larger.

Effect refers to the tendency of an atom to create partial negative charge.

Effect refers to the tendency of an atom to donate electrons and generate partial positive charges over them.
These are representative examples.



A carbon chain that has a greater number of electronegative atoms and a lower number of carbon atoms will be more inductive

. Then dissociation will be faster.
A carbon chain with a lower number of electronegative atoms and a greater number of carbon atoms will have a stronger inductive effect

. Dissociation is slower.

value of the given acids.

Ans:

acids.

Conclusion
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