Question

If a photon is associated with energy of 100Kj mol^-1 then its wave number is​

Answer 1

Answer:

    λ = 119.705 × 10⁻⁵m

Explanation:

Energy (E) = 100 Kj/mol = 100/6.022 × 10²³ × 10³ j/atom

Energy (E) = nhc / λ

n - number of photons

h - plancks constant = 6.626×10⁻³⁴

c - speed of light = 3 × 10⁸

λ - wavelength

E = 1 × 6.626×10⁻³⁴ × 3 × 10⁸ / λ

100/6.022 × 10²³ × 10³ = 6.626×10⁻³⁴ × 3 × 10⁸ / λ

λ = 6.626×10⁻³⁴ × 3 × 10⁸  × 6.022 × 10²³ / 100

λ = 119.705× 10⁸× 10²¹ ×10⁻³⁴

λ = 119.705 × 10⁻⁵m