THE BOND ENERGY OF THE i2 MOLECULE IS 149Kj/MOL. WHAT IS THE LONGEST WAVELENGTH OF LIGHT THAT WILL BREAK THIS BOND?
To determine the longest wavelength of light that will break the bond in the I2 molecule, we need to use the equation:
E = hc/λ
Where:
E is the energy required to break the bond (in joules),
h is Planck's constant (6.626 x 10^-34 J · s),
c is the speed of light (3.00 x 10^8 m/s),
λ is the wavelength of light (in meters).
First, let's convert the bond energy from kilojoules per mole (KJ/mol) to joules (J).
1 KJ/mol = 1000 J/mol
Energy required to break the bond in joules = 149 KJ/mol x (1000 J/1 KJ) = 149,000 J/mol
Now we can rearrange the equation to solve for the wavelength (λ):
λ = hc/E
Substituting the known values:
λ = (6.626 x 10^-34 J · s) x (3.00 x 10^8 m/s) / 149,000 J/mol
Calculating this expression will give us the longest wavelength of light that will break the bond in the I2 molecule.