C-Cl bond energy 354 kJ/mol smallest frequency of light in Hz

C-Cl bond energy 354 kJ/mol smallest frequency of light in Hz

 

 

Some aerosol sprays used to contain chlorofluoromethane, CH2ClF.

This substance was banned when it was discovered that

it contributed to the destruction of the ozone layer in the upper stratosphere.

When CH3ClF absorbs a photon of light having sufficient energy,

the C−Cl bond dissociates: CH2ClF(g) + photon → CH2F(g) + Cl(g)

The chlorine atom (a radical) catalyzes the conversion of O3 to O2.

The C−Cl bond energy is 354 kJ/mol.

What is the smallest frequency of light, in Hz, that will break this bond?

 

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(354000 J/mol) (1 mol / 6.022×10^23 개)

= 5.88×10^(-19) J

---> 광자 1개의 에너지

 

 

 

E = hν

( 참고 https://ywpop.tistory.com/4964 )

 

ν = E / h

= (5.88×10^(-19) J) / (6.626×10^(-34) J•s)

= 8.87×10^14 /s

 

 

 

답: 8.87×10^14 Hz