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Question
Give three points to differentiate between saturated and unsaturated
hydrocarbons.
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Solution
| S.No. | Saturated organic comnound | Unsaturated organic comnound |
| 1. | All the four valencies of each carbon atom are satisfied by forming single covalent bonds with carbon and with hydronen atoms. | The valencies of at least two carbon atoms are not fully satisfied by the hydrogen atoms. |
| 2. | Carbon atoms are joined only by a single covalent bond | Carbon atoms are joined by double covalent bonds or by trinle covalent bonds. |
| 3. | Less reactive | More reactive |
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RELATED QUESTIONS
Write the name and formula of the 2nd member of homologous series having general formula CnH2n + 2.
The molecular formula of a homologue of butane is:
(a) C4H8
(b) C3H6
(c) C4H6
(d) C3H8
What is the difference in the molecular formula of any two adjacent homologues in terms of molecular mass?
Copy and complete the following table, which relates to the three homologous series of hydrocarbons:
| General formula | CnH2n | CnH2n-2 | CnH2n+2 |
| IUPAC name of the homologus series | |||
| Characteristic bond type | Single bonds | ||
| IUPAC name of the first member of the series | |||
| Type of reaction with chlorine | Addition |
While going in an increasing order there is a rise in the molecular mass of the consecutive members of the homologous series by _______.
The general molecular formula for the homologous series of alkynes is _______.
There are different general molecular formula for all members of the homologous series.
Complete the following table for homologous series of Alkenes.
| Name | Molecular formula | Condensed structural formula | Number of carbon atom | Number of -CH2- units | Boiling point °C |
| Ethene | C2H4 | CH2 = CH2 | 2 | 0 | -102 |
| Propene | C3H6 | CH3–CH = CH2 | 3 | 1 | -48 |
| 1-Butene | C4H8 | CH3–CH2–CH = CH2 | ______ | ______ | -6.5 |
| 1-Pentene | C5H10 | CH3–CH2–CH2–CH = CH2 | ______ | ______ | 30 |
Successive members of a homologous series vary by how many atomic mass unit?
Consider the carbon compounds having following molecular formula:
(i) C3H6 (ii) C3H8 (iii) C4H6 (iv) C6H6 (v) C6H12
- State the number of double covalent bonds present in C3H6.
- Write the formula of first member of the homologous series to which the carbon compound C4H6 belongs.
- Which one of the above compounds forms a ring structure of carbon atoms?
- Identify, which of the above compounds, is a member of alkane series.
