AP BIOLOGY

BIOCHEMISTRY

POLAR AND NONPOLAR MOLECULES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What kind of compound is CO2?
A
Non-polar molecule with polar bonds
B
Polar molecule with polar bonds
C
ionic
D
polar molecule with non-polar bonds
Explanation: 

Detailed explanation-1: -Carbon dioxide is symmetric and the pull of the two oxygens on the carbon’s electrons cancel out, so it is a nonpolar molecule with polar bonds.

Detailed explanation-2: -Both CO2 and H2O have two polar bonds. However the dipoles in the linear CO2 molecule cancel each other out, meaning that the CO2 molecule is non-polar.

Detailed explanation-3: -In CO2 molecule, CO bond is polar but CO2 molecule is non-polar because the vector sum of Dipole moment of the two CO bond is zero.

Detailed explanation-4: -Carbon dioxide, which has the chemical formula CO2, is non-polar. It contains two polar bonds that are arranged symmetrically. Carbon forms a double bond with each oxygen atom. Since carbon and oxygen have different electronegativities, the electrons are not shared equally between the two atoms.

Detailed explanation-5: -In CO2 molecule, C=O. bond is polar but CO2 molecule is non-polar (with zero dipole moment) because the vector sum of dipoles of two C=O. bonds is zero.

There is 1 question to complete.