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+{
+ "cells": [
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "# Chapter18 Spectroscopy"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 18.1, Page no.69"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 4,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "energy in ergs = 95.3 K cal moleˆ−1\n"
+ ]
+ }
+ ],
+ "source": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "l=3000 #A\n",
+ "h=6.62*10** -27 # erg sec\n",
+ "c=3*10**10 #cm/ sec\n",
+ "N=6*10**23 \n",
+ "#CALCULATIONS\n",
+ "E=h*c/(l*10**-8)\n",
+ "E1=E*N/(4.18*10**7) \n",
+ "#RESULTS\n",
+ "E1=E1+276\n",
+ "E1=E1/10**3\n",
+ "E1=round(E1,1)\n",
+ "print 'energy in ergs =',E1,'K cal moleˆ−1'"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 18.2, Page no.69"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 2,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "energy in electron = 4.0 electron volts\n"
+ ]
+ }
+ ],
+ "source": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "E=95300 # cal moleˆ−1 \n",
+ "l=3000 #A\n",
+ "e=23060 # cal moleˆ−1 evˆ−1 \n",
+ "#CALCULATIONS \n",
+ "e1=E/e \n",
+ "#RESULTS\n",
+ "e1=round(e1,3)\n",
+ "print 'energy in electron =',e1,'electron volts'"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 18.3, Page no.70"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 10,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "perentage transmmitancy= 56.1 percent\n"
+ ]
+ }
+ ],
+ "source": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "p=19.2 # percent\n",
+ "b=1 #cm\n",
+ "c=5*10**-4 #mole l ˆ−1\n",
+ "m=1.75*10** -4 #M\n",
+ "#CALCULATIONS\n",
+ "As=math.log10 (100/p)\n",
+ "am=As/(b*c) \n",
+ "r=100/10**(am*m) \n",
+ "#RESULTS \n",
+ "r=round(r,1)\n",
+ "print 'perentage transmmitancy=',r,'percent'"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 18.4, Page no.70"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 4,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "perentage = 25.217 percent\n"
+ ]
+ }
+ ],
+ "source": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "a=193 #moleˆ−1 cmˆ−1 \n",
+ "b=2 #cm \n",
+ "c=1.55*10** -3 #mole l ˆ−1 \n",
+ "#CALCULATIONS \n",
+ "r=100/10**(a*b*c) \n",
+ "#RESULTS \n",
+ "r=round(r,3)\n",
+ "print 'perentage =',r,'percent'"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 18.5, Page no.71"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 3,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "reduced mass = 1.64 *10**-24 g\n",
+ "moment of inertia = 2.7 * 10**-40 g cmˆ2\n"
+ ]
+ }
+ ],
+ "source": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "m=1.008 #gms\n",
+ "m1=36.98 #gm\n",
+ "N=6*10**23 # molecules\n",
+ "r=1.275*10** -8 #cm\n",
+ "#CALCULATIONS\n",
+ "u=m*m1/(N*(m+m1))\n",
+ "I=u*r**2 \n",
+ "#RESULTS \n",
+ "u=u*10**24\n",
+ "u=round(u,2)\n",
+ "I=I*10**40\n",
+ "I=round(I,1)\n",
+ "print 'reduced mass =',u,'*10**-24 g'\n",
+ "print 'moment of inertia =',I,'* 10**-40 g cmˆ2'"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 18.6, Page no.71"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 6,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "frequency = 21.133 cmˆ−1\n"
+ ]
+ }
+ ],
+ "source": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "from math import pi\n",
+ "h=6.625*10**-27 # erg sec \n",
+ "c= 3*10**10 #cm secˆ−1 \n",
+ "k= 2.647*10** -40 #gm cmˆ2 \n",
+ "#CALCULATIONS \n",
+ "v=h/(4*pi**2*k*c) \n",
+ "#RESULTS\n",
+ "v=round(v,3)\n",
+ "print 'frequency =',v,'cmˆ−1'"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 18.7, Page no.71"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 7,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "force constant = 505321.24 dyne cmˆ−1\n"
+ ]
+ }
+ ],
+ "source": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "v=8.867*10**13 # secˆ−1 \n",
+ "u=1.628*10**-24 #gms \n",
+ "#CALCULATIONS \n",
+ "k=(pi*2*v)**2*u \n",
+ "#RESULTS \n",
+ "k=round(k,2)\n",
+ "print 'force constant =',k,'dyne cmˆ−1'"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## Example 18.8, Page no.72"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 8,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "dissociation energy = 109.48 kcal moleˆ−1\n",
+ "dissociation energy = 38299.56 cmˆ−1\n"
+ ]
+ }
+ ],
+ "source": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "e=23.06 # kcal moleˆ−1\n",
+ "E=4.476 # ev\n",
+ "h=6.627*10** -27 # ergs sec\n",
+ "c=3*10**10 #cm/ sec\n",
+ "v=4395 #cmˆ−1\n",
+ "e1=8060 # ev\n",
+ "N=6*10**23 \n",
+ "#CALCULATIONS\n",
+ "D=E*e+(h*c*N*v/(2*10**3*4.184*10**7))\n",
+ "D1=E*e1+(v/2)\n",
+ "D=round(D,2)\n",
+ "#RESULTS\n",
+ "print 'dissociation energy =',D,'kcal moleˆ−1'\n",
+ "print 'dissociation energy =',D1+26,'cmˆ−1'"
+ ]
+ }
+ ],
+ "metadata": {
+ "anaconda-cloud": {},
+ "kernelspec": {
+ "display_name": "Python [Root]",
+ "language": "python",
+ "name": "Python [Root]"
+ },
+ "language_info": {
+ "codemirror_mode": {
+ "name": "ipython",
+ "version": 2
+ },
+ "file_extension": ".py",
+ "mimetype": "text/x-python",
+ "name": "python",
+ "nbconvert_exporter": "python",
+ "pygments_lexer": "ipython2",
+ "version": "2.7.11"
+ }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}
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