Question

Covalent bonds in a molecule absorb radiation in the IR region and vibrate at characteristic frequencies.

Answer 1

Answer:

(a) ν = 3.1 × 10¹³ s⁻¹

(b) λ = 3.467 μm

Explanation:

We can solve both problems using the following expression.

c = λ × ν

where,

c: speed of light

λ: wavelength

ν: frequency

(a)

c = λ × ν

ν = c / λ

ν = (3.000 × 10⁸ m/s) / (9.6 × 10⁻⁶ m)

ν = 3.1 × 10¹³ s⁻¹

(b)

c = λ × ν

λ = c / ν

λ = (3.000 × 10⁸ m/s) / (8.652 × 10¹³ s⁻¹)

λ = 3.467 × 10⁻⁶ m

λ = 3.467 × 10⁻⁶ m (10⁶ μm/ 1 m)

λ = 3.467 μm