Hydroxide Ion Properties and Polarity

The video tutorial explores whether the hydroxide ion (OH-) is polar or nonpolar. It begins by explaining the structure of the hydroxide ion and its negative charge. The tutorial then examines the difference in electronegativity between hydrogen and oxygen, highlighting that the electrons in the bond are not shared equally, leading to polarity. The video concludes by discussing how the hydroxide ion interacts with other polar substances, such as water, due to its extra electron and polar nature.

What does the presence of brackets in the Lewis structure of hydroxide ion indicate?

• A neutral charge

• An extra negative charge

• A double bond

• A positive charge

Why is there a significant difference in electronegativity between hydrogen and oxygen?

• Hydrogen is more electronegative than oxygen

• Oxygen is more electronegative than hydrogen

• Electronegativity does not affect polarity

• Both have the same electronegativity

What happens to the electrons in the bond between hydrogen and oxygen in the hydroxide ion?

• They are not shared at all

• They are shared equally

• They are more attracted to oxygen

• They are more attracted to hydrogen

What is the result of the unequal sharing of electrons in the hydroxide ion?

• The ion becomes polar

• The ion becomes nonpolar

• The ion loses its charge

• The ion becomes neutral

Which of the following best describes the charge distribution in the hydroxide ion?

• Both oxygen and hydrogen are equally charged

• Both oxygen and hydrogen are neutral

• Oxygen is more positive, hydrogen is more negative

• Oxygen is more negative, hydrogen is more positive

How does the extra electron in the hydroxide ion affect its interactions?

• It enhances interaction with polar substances

• It allows the ion to interact with nonpolar substances

• It has no effect on interactions

• It makes the ion nonpolar

What is the overall conclusion about the hydroxide ion's polarity?

• It is nonpolar

• It is polar

• It is neutral

• It has no charge