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Questions and Answers
Which compound is nonpolar?
What characteristic makes cis-dichloroethylene polar?
Which of the following compounds has no isomer?
What type of bond is present in cis-dichloroethylene?
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Which compound contains both a chlorine atom and a carbon-carbon double bond?
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Study Notes
Polarity of Compounds
- 1,2-dichloroethane ($C_2H_4Cl_2$) is a nonpolar molecule due to its symmetrical tetrahedral geometry.
- The dipole moments of the two C-Cl bonds in 1,2-dichloroethane cancel each other out, resulting in overall nonpolarity.
- In contrast, cis-dichloroethylene ($C_2H_2Cl_2$) has a polar character because it features a double bond (C=C) and a bent shape.
- The cis configuration leads to an uneven distribution of charge, resulting in a net dipole moment.
Isomers of Compounds
- $CH_3CH_2CH_2Cl$: This compound has isomers, including primary and secondary alkyl chlorides.
- $CH_3CHO$: This compound (acetaldehyde) has structural isomers, specifically cyclic and branched variants.
- $CH_2=CHCl$: This compound (vinyl chloride) has geometric isomers due to the presence of the double bond.
- $ClCH_2CH_2Cl$: This compound (1,2-dichloroethane) has no isomers, as the two chlorine atoms are bound to the same carbon chain without alternative structural arrangements.
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Description
This quiz explores the molecular polarity of 1,2 dichloroethane and cis-dichloroethylene. It focuses on the structural and bonding differences that lead to nonpolar and polar characteristics. Test your understanding of molecular shapes and dipole moments in these compounds.
