The dissociation energy of a molecule is the energy required to break apart the molecule into its separate atoms. The dissociation energy fo

Question

The dissociation energy of a molecule is the energy required to break apart the molecule into its separate atoms. The dissociation energy for a particular molecule is 1.12 × 10-18 J. Suppose that this energy is provided by a single photon.

Determine the (a) wavelength and (b) frequency of the photon. (c) In what region of the electromagnetic

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Ngọc Hoa 4 years 2021-07-28T21:00:38+00:00 1 Answers 32 views 0

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  1. sori
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    2021-07-28T21:02:15+00:00
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    Answer:

    (a) 1.78 * 10^(-7) m

    (b) 1.69 * 10(15) Hz

    (c) Ultraviolet light

    Explanation:

    (a) To determine the wavelength, we use one of the formulae of energy of a wave:

    E = hc/λ

    Where h = Planck’s constant

    c = speed of light

    λ = wavelength.

    Therefore, wavelength, λ, is:

    λ = hc/E

    λ = (6.626 * 10^(-34) * 3 * 10^8) / (1.12 * 10^(-18))

    λ = 1.775 * 10^(-7) m

    This is the wavelength of the photon.

    (b) Using formula for speed of a wave, we can find the frequency:

    c = λf

    Where f = frequency.

    f = c/λ

    f = (3 * 10^8) / (1.775 * 19^(-7))

    f = 1.69 * 10^(15) Hz

    This is the frequency of the photon.

    (c) By comparing the frequency and wavelength of the photon with the electromagnetic spectrum, the proton is in the region of ultraviolet light.

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