Answer
Verified
439.5k+ views
Hint: A general formula is a type of empirical formula that represents the composition of any member of an entire class of compounds. In chemistry, a chemical compound's empirical formula represents the simplest positive integer ratio of atoms present in a compound.
Complete answer:
A general formula is a type of empirical formula that represents the composition of any member of an entire class of compounds.
A. Diketone: A diketone or dione is a molecule containing two ketone groups. The simplest diketone is diacetyl, also known as 2,3-butanedione ${{(C{{H}_{3}}CO)}_{2}}$. Diacetyl, acetylacetone, and hexane-2,5-dione are examples of 1,2-, 1,3-, 1,4-diketones, respectively. Hence, the general formula of diketones is ${{C}_{n}}{{H}_{2n-2}}{{O}_{2}}$.
B. Carboxylic acid: A carboxylic acid is an organic compound that contains a carboxyl group (-COOH) attached to an R- group. The general formula of carboxylic acid is R-COOH, with R referring to the alkyl group. Important examples include the amino acids and fatty acids. Deprotonation of carboxylic acid gives a carboxylate anion. Examples of carboxylic acid are Methanoic acid (HCOOH), Ethanoic acid $C{{H}_{3}}COOH$ , Propanoic acid $C{{H}_{3}}C{{H}_{2}}COOH$ etc. Hence, the general formula of carboxylic acid is ${{C}_{n}}{{H}_{2n}}{{O}_{2}}$.
C. Diols: A diol is a chemical compound containing two hydroxyl groups (-OH groups). An aliphatic diol is also called a glycol. The most common industrial diol is ethylene glycol. Examples of diols in which the hydroxyl functional groups are more widely separated include 1,4-butanediol $OH-{{\left( C{{H}_{2}} \right)}_{4}}-OH$ and propylene-1,3-diol, or beta propylene glycol, $OH-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-OH$. Hence, the general formula of diols is ${{C}_{n}}{{H}_{3n}}{{O}_{2}}$ .
D. Dialdehydes: A dialdehyde is an organic chemical compound with two aldehyde groups. The nomenclature of aldehydes have the ending -dial or sometimes- dialdehyde. Examples of aldehydes are butanedial, which is also called succinaldehyde ${{(C{{H}_{2}}CHO)}_{2}}$, malondialdehyde $\left( C{{H}_{2}}{{\left( CHO \right)}_{2}} \right)$ etc. Hence, the general formula of aldehydes is ${{C}_{n}}{{H}_{n}}{{O}_{2}}$.
Hence, the general formula ${{C}_{n}}{{H}_{2n}}{{O}_{2}}$ could be for open chain of carboxylic acid.
Hence, option B is correct.
Note:
Always remember, the general formula of carboxylic acid is ${{C}_{n}}{{H}_{2n}}{{O}_{2}}$ for open chain.
Always remember, the general formula of diols is ${{C}_{n}}{{H}_{3n}}{{O}_{2}}$ for open chain.
Always remember, the general formula of diketones is ${{C}_{n}}{{H}_{2n-2}}{{O}_{2}}$ for open chain.
Complete answer:
A general formula is a type of empirical formula that represents the composition of any member of an entire class of compounds.
A. Diketone: A diketone or dione is a molecule containing two ketone groups. The simplest diketone is diacetyl, also known as 2,3-butanedione ${{(C{{H}_{3}}CO)}_{2}}$. Diacetyl, acetylacetone, and hexane-2,5-dione are examples of 1,2-, 1,3-, 1,4-diketones, respectively. Hence, the general formula of diketones is ${{C}_{n}}{{H}_{2n-2}}{{O}_{2}}$.
B. Carboxylic acid: A carboxylic acid is an organic compound that contains a carboxyl group (-COOH) attached to an R- group. The general formula of carboxylic acid is R-COOH, with R referring to the alkyl group. Important examples include the amino acids and fatty acids. Deprotonation of carboxylic acid gives a carboxylate anion. Examples of carboxylic acid are Methanoic acid (HCOOH), Ethanoic acid $C{{H}_{3}}COOH$ , Propanoic acid $C{{H}_{3}}C{{H}_{2}}COOH$ etc. Hence, the general formula of carboxylic acid is ${{C}_{n}}{{H}_{2n}}{{O}_{2}}$.
C. Diols: A diol is a chemical compound containing two hydroxyl groups (-OH groups). An aliphatic diol is also called a glycol. The most common industrial diol is ethylene glycol. Examples of diols in which the hydroxyl functional groups are more widely separated include 1,4-butanediol $OH-{{\left( C{{H}_{2}} \right)}_{4}}-OH$ and propylene-1,3-diol, or beta propylene glycol, $OH-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-OH$. Hence, the general formula of diols is ${{C}_{n}}{{H}_{3n}}{{O}_{2}}$ .
D. Dialdehydes: A dialdehyde is an organic chemical compound with two aldehyde groups. The nomenclature of aldehydes have the ending -dial or sometimes- dialdehyde. Examples of aldehydes are butanedial, which is also called succinaldehyde ${{(C{{H}_{2}}CHO)}_{2}}$, malondialdehyde $\left( C{{H}_{2}}{{\left( CHO \right)}_{2}} \right)$ etc. Hence, the general formula of aldehydes is ${{C}_{n}}{{H}_{n}}{{O}_{2}}$.
Hence, the general formula ${{C}_{n}}{{H}_{2n}}{{O}_{2}}$ could be for open chain of carboxylic acid.
Hence, option B is correct.
Note:
Always remember, the general formula of carboxylic acid is ${{C}_{n}}{{H}_{2n}}{{O}_{2}}$ for open chain.
Always remember, the general formula of diols is ${{C}_{n}}{{H}_{3n}}{{O}_{2}}$ for open chain.
Always remember, the general formula of diketones is ${{C}_{n}}{{H}_{2n-2}}{{O}_{2}}$ for open chain.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
Mark and label the given geoinformation on the outline class 11 social science CBSE
When people say No pun intended what does that mea class 8 english CBSE
Name the states which share their boundary with Indias class 9 social science CBSE
Give an account of the Northern Plains of India class 9 social science CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Trending doubts
A group of fish is known as class 7 english CBSE
The highest dam in India is A Bhakra dam B Tehri dam class 10 social science CBSE
Write all prime numbers between 80 and 100 class 8 maths CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Onam is the main festival of which state A Karnataka class 7 social science CBSE
Who administers the oath of office to the President class 10 social science CBSE
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
Kolkata port is situated on the banks of river A Ganga class 9 social science CBSE
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE