Question

The energy required to break one mole of Cl−Cl bonds in Cl2​ is 242 kJ/mol. The longest wavelength of light capable of breaking single Cl−Cl bond is: 
(c=3×10^8m/s, NA​=6.023×10^23mol−1)

A .

700 nm

B .

494 nm

C .

594 nm

D .

640 nm​

Answer 1

Answer:

Refer https://brainly.in/question/3190182

Answer 2

Answer:

b 494nm

Explanation:

here we have to calculate the energy required to break one bond

i.e

$4 \times {10}^{ - 20}$

and now use the formula for finding the wavelength i.e

$hc \div e$

where h is planks constant

c. is speed of light

and e is energy required to break one bond