Bond Angle and Molecule Structure – Chemistry

Bond Angle and Molecule Structure – Chapter 1

Bond angle and molecule structure are some of the topics discussed in chapter 1.


What is the missing number most likely to be for the molecule below?

NH?

  • 1
  • 2
  • 3 – correct
  • 4

What is the missing number most likely to be for the molecule below?

CH2Cl?

  • 1
  • 2 – correct
  • 3
  • 4

Which of the following is the correct tetrahedral representation of CH4?

Bond Angle and Molecule Structure - Chemistry
  • A – correct
  • B
  • C

What is the bond angle for carbon 7 in the molecule below?

  • 120o
  • 109.5o – correct
  • 180o
  • 90o

What is the bond angle for carbon 2 in the molecule above?

  • 120o – correct
  • 109.5o
  • 180o
  • 90o

What is the bond angle for atom 11 in the molecule above?

Bond Angle and Molecule Structure - Chemistry
  • 120o
  • 109.5o – correct
  • 180o
  • 90o

What is the hybridization state for carbon 4 in the molecule below?

Bond Angle and Molecule Structure - Chemistry
  • sp3
  • sp2
  • sp – correct

What is the hybridization state of atom 2 in the molecule above?

Bond Angle and Molecule Structure - Chemistry
  • sp3
  • sp2 – correct
  • sp

What is the correct hybridization state for atom 8 in the molecule above?

Bond Angle and Molecule Structure - Chemistry
  • sp3
  • sp2
  • sp – correct

Which of the following is the least electronegative?

  • Li – correct
  • F
  • W
  • Cl

Of the following, which is the most electronegative?

  • Au – correct
  • Os
  • W
  • B

Is the bond between Li and F more polar than the bond between C and F?

  • yes – correct
  • no

Of the molecules below, only __________ is polar.

  • CH4
  • C2H2
  • I2
  • CH3O – correct

Of the bonds below, __________ is the least polar.

  • H-I – correct
  • H-Br
  • H-Cl
  • H-F

According to the Bronsted-Lowry definition, a substance that____________ a proton is a                 .

  • donates, acid – correct
  • accepts, nucleophile
  • accepts, acid
  • donates, nucleophile

Which of the following is the most acidic?

dihydrogen phosphate ion (pKa = 7.21)            water (pKa = 15.74)            actetic acid (pKa = 4.76)            hydrochloric acid (pKa = -7.0)

  • dihydrogen phosphate ion
  • water
  • acetic acid
  • hydrochloric acid – correct

Which of the following is the least acidic?

HCO3H (pKa = 7.1)            HCO2H (pKa = 3.7)            CH3OH (pKa = 15.5)            CH3CO2H (pKa = 4.8)

  • HCO3H
  • HCO2H
  • CH3OH – correct
  • CH3CO2H

Identify the base in the following chemical equation:

HCl + H2O ⇔ H3O+ + Cl

  • HCl
  • H2O – correct
  • H3O+
  • Cl

Identify the conjugate base in the following chemical equation:

HCl + H2O ⇔ H3O+ + Cl

  • HCl
  • H2O
  • H3O+
  • Cl – correct

Consider the reaction below:

HNO2 (aq) + H2O (l) ⇔ H3O+ (aq) + NO2 (aq)

What is the proton acceptor?

  • HNO2
  • H2O – correct
  • H3O+
  • NO2

Identify the conjugate acid in the following chemical equation:

CH3CO2H + OH ⇔ H2O + CH3CO2

  • CH3CO2H
  • OH
  • H2O – correct
  • CH3CO2

In the molecule below, which direction will the arrow indicating the bond polarity be pointing to?

H3C-NH2

  • towards the N – correct
  • towards the C
  • the molecule is not polar

Of the following molecules, only __________ is polar.

  • CHCl3 – correct
  • CBr4
  • CO2
  • Cl2

Is the bond between C and H more polar than the bond between C and O?

  • yes
  • no – correct

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