# chem

posted by .

What is the longest wavelength of light that will provide photons of sufficient energy to break the pi bond and cause the isomerization?

Energy required to break pi bond is 4.42*10^-19.

wavelenght=c/f but how do i figure out what f is?

• chem -

E = hc/wavelength.
The energy you plug in should be in J/photon (that will be J/mol divided by 6.02 x 10^23 photons/mol).

• chem -

450 nm

## Similar Questions

1. ### chem

an energy value of 3.313x10^-19 joules is needed to break a chemical bond. what is the wavelength of energy needed to break the bond?
2. ### Chemistry

The bond energy of the O2 molecule is 495. a) calculate the minimum frequency and max wavelength of light required to break this bond. b) how many photons of this wavelength would it take in order to break open the bonds of all the …
3. ### chem

What is the longest wavelength of light that will provide photons of sufficient energy to break the pi bond and cause the isomerization?
4. ### college chemistry

CH4 + 2 Cl2--> CH2Cl2 + 2HCl Cl-Cl bond energy: 242 kj/mole 1. Calculate the amount of energy (Joules) needed to break a single Cl-Cl bond. 2. Calculate the longest wavelength of light (meters)that can supply the energy per photon …
5. ### chemistry

The X-X bond energy in the hypothetical gas, X2 is 153 kJ/mol. a. How much energy, in joules, is required to break the bond in a single X-X molecule?
6. ### Chemistry

If DeltaH for the reaction I2 (s) Delta 2I (g) is 153 kJ/mol. What is the longest wavelength of light that can break an I – I bond?
7. ### Chemistry

If H for the reaction I2 (s)  2I (g) is 153 kJ/mol. What is the longest wavelength of light that can break an I – I bond?
8. ### Chemistry 151

A minimum energy of 225 kJ/mol is required to break a certain chemical bond in a compound. What is the longest wavelength of radiation (in nm and angstroms, Å; 1 Å = 10−10 m) necessary to break the bond?
9. ### chem

The min. energy needed to break a C-Br bond is 288000mol^-1. If one has access to laser with 3 output wavelengths 266,1065,800nm, which wavelength(s) can be used to break that bond?
10. ### PHYSICAL CHEM

THE BOND ENERGY OF THE i2 MOLECULE IS 149Kj/MOL. WHAT IS THE LONGEST WAVELENGTH OF LIGHT THAT WILL BREAK THIS BOND?

More Similar Questions