Post Lab 1. (10) Diatomic molecules can be visualized as two spheres connected by a spring, with the spring representing the chemical bond between the two atoms. Hooke's law, as shown in equation 1, for comparison only, states that the vibrational frequency is related to the masses of the two spheres and the strength of the bond between them. The wavenumber of the vibration can be approximated using equation 2. Using equation 2, Calculate the approximate absorption wavenumber of the following bonds and also list the actual absorption wavenumbers: C+0, C-H, N-H. C-O. (equation 1) 1k 2 plu u= (equation 2) 1 2 pc lu Where v is the frequency, k equals the force constant, u is the reduced mass in grams (grams of one atom, not the molar mass, should be a very small number), and can be calculated using equation 3, c is the speed of light in cm/sec, f is the bond force constant and is the vibrational frequency in cm-1. (equation 3) u=(ml*m2)/(ml+m2) Force Constants (dyne/cm) Single Bond 5X10^5 Double Bond 10X1045 Triple Bond 15X10^5 2. (5) One way that we attempt to increase the signal to noise ratio is by taking multiple scans and adding them together. This increases the signal to noise ratio by a factor of the square root of the number of scans. Why oes this improve the S/N ratio