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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Chapter12 Chemical Kinetics"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 12.1, Page no.48"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "fraction of nitrogen pentoxide remain unreacted after 1 hour= 0.311\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math\n",
+    "#initialisation of variables\n",
+    "Vs=23.95 #ml \n",
+    "Ve=34.75 #ml \n",
+    "#CALCULATIONS \n",
+    "fr=(Ve-Vs)/Ve \n",
+    "#RESULTS \n",
+    "fr=round(fr,3)\n",
+    "print 'fraction of nitrogen pentoxide remain unreacted after 1 hour=',fr"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 12.2, Page no.48"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "fraction remained undecomposed 0.5\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math\n",
+    "#initialisation of variables\n",
+    "Ps=200.0 #mm \n",
+    "Pe=390.0 #mm \n",
+    "Pt=300.0 #mm \n",
+    "t=500.0    #sec\n",
+    "Pe1=400.0 #mm \n",
+    "#CALCULATIONS \n",
+    "r= (Pe1-Pt)/(Pe1 -Ps)\n",
+    "#RESULTS\n",
+    "print 'fraction remained undecomposed',r"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 12.3, Page no.49"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "time of residence of gas= 25.0 sec\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math\n",
+    "#initialisation of variables\n",
+    "V=1200.0 #ml\n",
+    "V1=100.0 #ml\n",
+    "t=300.0 # sec\n",
+    "#CALCULATIONS\n",
+    "r=V/t\n",
+    "t1=V1/r\n",
+    "#RESULTS \n",
+    "print 'time of residence of gas=',t1,'sec'"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 12.4, Page no.49"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "k= 0.107 lit molˆ−1 secˆ−1\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math\n",
+    "#initialisation of variables\n",
+    "y=0.550\n",
+    "x=2400.0\n",
+    "d=0.00494\n",
+    "#CALCULATIONS\n",
+    "s=y/x\n",
+    "k=s*2.303/d\n",
+    "#RESULTS \n",
+    "k=round(k,3)\n",
+    "print 'k=',k,'lit molˆ−1 secˆ−1'"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 12.7, Page no.50"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "second order rate for this constant= 0.0061 lit molˆ−1 secˆ−1\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math\n",
+    "from math import sqrt,pi\n",
+    "#initialisation of variables\n",
+    "T=393.7 #C \n",
+    "k=2.6*10** -4 # l i t molˆ−1 secˆ−1 \n",
+    "R=1.987 # cal moleˆ−1 Kˆ−1 \n",
+    "E=45.6 # kcal moleˆ−1 \n",
+    "wl=3.5 #A \n",
+    "N=6*10**23 # molecules \n",
+    "R1=8.31*10 # ergs moleˆ−1 Kˆ−1 \n",
+    "M=127.9 #g moleˆ−1 \n",
+    "#CALCULATIONS \n",
+    "k=2*10**2*N*sqrt(pi*R1*(273.1+T)/M)*(wl*10**-8)**2*math.exp(-E*10**3/(R*(273.1+T)))\n",
+    "#RESULTS\n",
+    "k=round(k,4)\n",
+    "print 'second order rate for this constant=',k,'lit molˆ−1 secˆ−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
+}