Zadanie 10
Which molecules are polar? I. CHCl3 II. CH2F2 III. CF4 A. I and II only B. I and III only C. II and III only D. I, II and III
Molecular polarity and dipole moments
Decide whether a molecule or ion is polar by combining its bond dipoles with its geometry, explaining why symmetrical molecules such as CO2 and CCl4 are non-polar while H2O and NH3 have a net dipole moment.
Tę umiejętność sprawdza 13 zadań wzorowanych na arkuszach IB z lat 2022–2026.
Zadania sprawdzające tę umiejętność: 13 Otwórz w wyszukiwarce z filtrami
Zadanie 7
Which molecule is polar? A. BF3 B. NF3 C. CCl4 D. C2H4
Zadanie 8e
Several stereoisomers exist among the dichloroalkenes of molecular formula C4H6Cl2. (i) Draw the structural formula of cis-2,3-dichlorobut-2-ene. (ii) Outline why the cis-isomer of 2,3-dichlorobut-2-ene is polar, whereas the trans-isomer is not. (iii)…
Zadanie 10a
(i) State the electron configuration of a nitrogen atom. (ii) Draw the Lewis formula of ammonia. (iii) Deduce the electron domain geometry and the molecular geometry of the ammonia molecule. (iv) Explain why the ammonia molecule is polar.
Zadanie 7
Which molecule has the largest net dipole moment? A. SiF4 B. CS2 C. H2S D. H2O
Zadanie 4b
(i) Draw the Lewis (electron dot) structure of carbonyl chloride. (ii) Mark the bond polarities on your Lewis structure using the symbols δ+ and δ−. (iii) Explain the shape of the carbonyl chloride molecule and whether it is polar. (iv) State…
Zadanie 15
Which molecule is non-polar? A. SF4 B. ClF3 C. BrF5 D. XeF4
Zadanie 11
Which row correctly states the types of intermolecular force present between molecules of ethane, methylamine and fluoromethane? A. Ethane: London (dispersion) forces only; methylamine: London forces, dipole-dipole forces and hydrogen bonding; fluoromethane:…
Zadanie 11
Which substance has no intermolecular attraction other than London (dispersion) forces? A. ClF3 B. IF5 C. SeO2 D. SF6
Zadanie 11
Between the molecules of which substance do only London (dispersion) forces act? A. XeF4 B. SF4 C. ClF3 D. IF5
Zadanie 36
The structure of an isomer of 1,2-dichloroethene is shown. Which statement about this isomer is correct? A. It is the cis isomer and is polar. B. It is the cis isomer and is non-polar. C. It is the trans isomer and is polar. D. It is the trans isomer and is…
- Materiał graficzny
Zadanie 10
What is the main attraction between molecules in liquid carbon tetrachloride, CCl4? A. Hydrogen bonding B. Ionic attraction C. Dipole–dipole forces D. London (dispersion) forces
Zadanie 5f
PF3Cl2 can form isomers, some of which are polar and one of which is non-polar. Deduce the three-dimensional arrangement of one non-polar isomer and of one polar isomer of PF3Cl2 by stating the positions, axial or equatorial, of the two chlorine…