Atomic StructureHard
Question
An amount of 1.75 × 10–4 mole of HI decomposes by the absorption of photons of wavelength 2500 Å. If one molecule is decomposed per absorbed photon, the total energy absorbed is (NA × hc = 0.12 J)
Options
A.42.0 J
B.4.2 J
C.8.4 J
D.84 J
Solution
$E = n.\frac{hc}{\lambda} = \left( 1.75 \times 10^{- 4} \times N_{A} \right) \times \frac{hc}{2500 \times 10^{- 10}} = 84\text{ J}$
Create a free account to view solution
View Solution FreeMore Atomic Structure Questions
The dynamic mass (in kg) of the photon with a wavelength corresponding to the series limit of the Balmer transitions of ...Choose the correct configurations among the following :...Which of the following statements is/are correct ?1.0 g mixture of CaCO3(s) and glass beads liberate 0.22 g of CO2 upon ...The electronic configuration of carbon atom in the excited state is 1s2 2s1 2p3. Which of the following is/are correct s...Wave number of the first line in the Balmer series of Be3+ is 2.5 × 105 cm−1. Wave number of the second line of the Pasc...