Option C.5

Question 1

Three types of vibrations in CO2

Answer 1

Symmetric stretching
Asymmetric stretching
Bending

Question 2

What must happen for a gas to absorb infrared radiation?

Answer 2

Change in the dipole moment of the molecule as the bonds undergo stretching and bending

Question 3

IR active

Answer 3

Vibrational modes that absorb IR radiation

Question 4

Ocean acidification process

Answer 4

CO2 + H2O ⇌ H2CO3
H2CO3 ⇌ HCO3(-) + H(+)
HCO3(-) ⇌ H(+) + CO3(2-)