Quiz
Chapter 9 Quiz
Perguntas do quiz (6)
1Are the O-N-O bond angles greater in the nitrite (NO2-) ion or nitrate ion (NO3-)?
- ANitrate has the greater bond angle because double bonds take up more space than single bonds
- BNitrate has the greater bond angle because nitrite's lone pairs take up more space than bonds
- CNitrite has the greater bond angle because a trigonal planar bond angle is greater than a tetrahedral bond angle
- DNitrite has the greater bond angle because a linear bond angle is greater than a trigonal planar bond angle
2The following molecules contain polar covalent bonds. Which are overall nonpolar molecules?
- ACO2
- BH2O
- CCHCl3
- DCCl4
- EBH3
3Does COS have a dipole moment? Choose the answer that best explains the reason for your choice
- ACOS has a dipole moment because it is asymmetric and the dipole moments do not completely cancel
- BCOS has no dipole moment because the molecule is linear and dipole moments cancel in linear molecules
- CCOS has no dipole moment because it is bent and the dipole moments cancel
- DCOS has a dipole moment because the molecule is bent and the dipole moments combine
4Which molecule is more polar in each pair?
Pair #1: NH3 or PH3
Pair #2: CCl2F2 or CBr2F2- APair #1: NH3 is more polar than PH3
- BPair #1: PH3 is more polar than NH3
- CPair #2: CCl2F2 is more polar than CBr2F2
- DPair #2: CBr2F2 is more polar then CCl2F2
5Which of the following is NOT a potential consequence of molecular shape?
- AChemical reactivity
- BPhysical properties
- CChemical composition
- DMolecular recognition
6An atom in a molecule has a steric number of 4. The atom also has one lone pair of electrons. What is the molecular geometry around this atom?
- ATrigonal pyramidal
- BTetrahedral
- CBent
- DTrigonal planar
Informações
- Descrição
- Some practice questions from the chapter 9 homework problems
- Autor
- Kristen Wislowski
- Idioma
- English
- Visualizações
- 5
- Etiquetas
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