Home
Class 10
CHEMISTRY
IUPAC names of a few esters are given be...

IUPAC names of a few esters are given below:
1. Ethyl propanoate
2. Propyl methanoate
3. Methyl butanoate
4. Ethyl butanoate
The ester(s) which contain(s) ten hydrogen atoms per molecule is/are

A

1 only

B

4 only

C

1 and 3 only

D

1 and 2 only

Text Solution

AI Generated Solution

The correct Answer is:
To determine which of the given esters contain ten hydrogen atoms per molecule, we will analyze each ester one by one. ### Step 1: Understand the structure of esters Esters are organic compounds formed from the reaction of an alcohol and a carboxylic acid. The general formula for an ester can be represented as RCOOR', where R and R' represent hydrocarbon chains. ### Step 2: Analyze each ester 1. **Ethyl propanoate** - Ethyl (C2H5) + Propanoate (C3H5O2) - Structure: - Ethyl: C2H5 - Propanoate: C3H5O - Total Carbons: 2 (from ethyl) + 3 (from propanoate) = 5 - Total Hydrogens: 5 (from ethyl) + 5 (from propanoate) = 10 - **Hydrogens = 10** 2. **Propyl methanoate** - Propyl (C3H7) + Methanoate (C1H3O2) - Structure: - Propyl: C3H7 - Methanoate: C1H3O - Total Carbons: 3 (from propyl) + 1 (from methanoate) = 4 - Total Hydrogens: 7 (from propyl) + 3 (from methanoate) = 10 - **Hydrogens = 10** 3. **Methyl butanoate** - Methyl (C1H3) + Butanoate (C4H7O2) - Structure: - Methyl: C1H3 - Butanoate: C4H7O - Total Carbons: 1 (from methyl) + 4 (from butanoate) = 5 - Total Hydrogens: 3 (from methyl) + 7 (from butanoate) = 10 - **Hydrogens = 10** 4. **Ethyl butanoate** - Ethyl (C2H5) + Butanoate (C4H7O2) - Structure: - Ethyl: C2H5 - Butanoate: C4H7O - Total Carbons: 2 (from ethyl) + 4 (from butanoate) = 6 - Total Hydrogens: 5 (from ethyl) + 7 (from butanoate) = 12 - **Hydrogens = 12** ### Step 3: Conclusion The esters that contain ten hydrogen atoms per molecule are: - Ethyl propanoate - Propyl methanoate - Methyl butanoate ### Final Answer The esters which contain ten hydrogen atoms per molecule are: 1. Ethyl propanoate 2. Propyl methanoate 3. Methyl butanoate ---
To determine which of the given esters contain ten hydrogen atoms per molecule, we will analyze each ester one by one. ### Step 1: Understand the structure of esters Esters are organic compounds formed from the reaction of an alcohol and a carboxylic acid. The general formula for an ester can be represented as RCOOR', where R and R' represent hydrocarbon chains. ### Step 2: Analyze each ester 1. **Ethyl propanoate** ...
Promotional Banner

Topper's Solved these Questions

  • CARBON AND ITS COMPOUNDS

    SCIENCE OLYMPIAD FOUNDATION |Exercise ACHIEVERS SECTION (HOTS) |5 Videos

  • ACIDS, BASES AND SALTS

    SCIENCE OLYMPIAD FOUNDATION |Exercise ACHIEVERS SECTION (HOTS) |5 Videos

  • CHEMICAL REACTIONS AND EQUATIONS

    SCIENCE OLYMPIAD FOUNDATION |Exercise MULTIPLE CHOICE QUESTIONS|20 Videos

Similar Questions

Explore conceptually related problems

The names of some compounds are given below: (i) 5-Ethyl-3-methylheptane (ii) 4-Isopropyl-5-sec-butyldecane (iii) 2-Ethylpentane Why are the given names incorrect?

The IUPAC name of given compound is (1) 1-Ethyl-3-methyl cyclohexane (2) 1-Methyl-3-ethyl cyclohexane (3) 3-Methyl-I-ethyl cyclohexane (4) 3-Ethyl-I-methyl cyclohexane

Write the IUPAC name (s) and structure (s) of the simplest alkane (s) with lowest molecular mass (or the least number of C atoms) which contains 1^(@), 2^(@), 3^(@) and 4^(@) carbon atoms.

The IUPAC name of the given compound 5,6 - Diethyl-3-methyl-4- decene 7-methyl-heptene 6-methyl heptene 3,3-diethyl-5-ethyl-4-decene

Which of the following is correct? (i) 2 -Methylpentane has one isopropyl group. (ii) 3 -Methylhexane contains only one methyl, one ethyl, and one n -propyl group. (iii) 3 - Ethylpentane is the lowest molecular mass alkane which has ethyl group as the subsitituent. (iv) 2,3 -Dimethylbutane has two isopropyl groups.

Structures and IUPAC names of some hydrocarbons are given below. Explain why the names given in the parentheses are incorrect. underset(["and not 3,4,7-Trimethyloctane"])underset(2,5,6- "Trimethyloctane")(CH_(3)-underset(CH_(3))underset(|)(CH)-CH_(2)-CH_(2)-underset(CH_(3))underset(|)(CH)-underset(CH_(3))underset(|)(CH)-CH_(2)-CH_(3)) underset(["and not 5-Ethyl-3-methylheptane"])underset("3-Ethyl-5-methylheptane")(CH_(3)-CH_(2)-underset(CH_(2)CH_(3))underset(|)(CH)-CH_(2)-underset(CH_(3))underset(|)(CH)-CH_(2)-CH_(3))

The number of carbon atoms in exactly 12 g C^(12) is called Avogadro's number , N_(A) (6.022 xx 10^(23)) . One mole is the amount of material which contains Avogradro's number of particle. These definitions emphasize that the mole refers to a fixed number of NA^(+) b Avogadro's number of atoms , electrons to refer to a mole of helium , a mole of electrons , or a mole of NA^(+) by Avogadro's number of atoms, electrons or ions respectively. On the other hand, phrases like "one mole of hydrogen" can be ambiguous , and should be restated as "one mole of hydroden atoms" or " one mole fo hydrogen molecules." But it is a matter of common practice among chemists , however , to let the name of the element stand for its mos common form. Thus one mole of O_(2) is frequently referred to as one mole of oxygen , whereas one moles of O is called one mole of oxygen atoms. Suppose if we take one mole molecules fo H_(2)SO_(4) then it contain 2 moles of H atom 1 mole of S atom and 4 moles of O atom. It can also be said that moles of oxygen molecules is (4)/(2) =2 mole. Sulphur exists in different allotropic forms like S_(2) S_(6) 'and" S_(8) etc. If equal weight of these three ar taken in separate containers , then the ratio of number of atoms present in them is :

(a) Give the Claisen ester condensation product of ethyl butanoate. (b) Why does the Claisen ester condensation of ethyl-2-methyl propanoate (I) not take place ? ( c) Why does Claisen condensation of (I) take place by the use of Ph_3 C^(Ө) Na^(oplus) as a base ?