Energy equivalent to 10.00 text cm-1 is

Question

Energy equivalent to 10.00 text cm-1 is (A)  2.0× 10-22J peratom (B)  28.6× 10-3kcal text mol-1 photon (C)  12.0× 10-2kJ text mol-1 photon (D) All of the above

Tardigrade Admin · Accepted Answer

v=(1/λ ) 10cm-1=(1/λ ) or λ =(1/10)cm=0.1 cm=0.001m E=(hc/λ )=(6.626× 10-34× 3× 108/0.001)=19.878× 10-23 ≈ 2.0× 10-22J/atom=12.04× 10 text J/mol =12.04× 10-2kJ text mol-1=28.6× 10-3kcal text mol-1

Q. Energy equivalent to $10.00 c m^{- 1}$ is

$2.0 \times 10^{- 22} J$ peratom

$28.6 \times 10^{- 3} k c a l m o l^{- 1}$ photon

$12.0 \times 10^{- 2} k J m o l^{- 1}$ photon

All of the above

Q. Energy equivalent to 10.00cm−1 is

2.0×10−22J peratom

28.6×10−3kcalmol−1 photon

12.0×10−2kJmol−1 photon

All of the above

v=λ1​ 10cm−1=λ1​ or λ=101​cm=0.1cm=0.001m E=λhc​=0.0016.626×10−34×3×108​=19.878×10−23 ≈2.0×10−22J/atom=12.04×10J/mol =12.04×10−2kJmol−1=28.6×10−3kcalmol−1

Q. Energy equivalent to $10.00 c m^{- 1}$ is

$2.0 \times 10^{- 22} J$ peratom

$28.6 \times 10^{- 3} k c a l m o l^{- 1}$ photon

$12.0 \times 10^{- 2} k J m o l^{- 1}$ photon