{
 "metadata": {
  "name": "",
  "signature": "sha256:420bfba231cfede93787915c3c2f3a006f82a824943153e719a02f61a9666037"
 },
 "nbformat": 3,
 "nbformat_minor": 0,
 "worksheets": [
  {
   "cells": [
    {
     "cell_type": "heading",
     "level": 1,
     "metadata": {},
     "source": [
      "Chapter 15 : Activities and Activity coefficients"
     ]
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Example 15.1 Page No : 357"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "\n",
      "# Variables\n",
      "p1 = 17.222 \t\t\t#mm\n",
      "p2 = 17.535 \t\t\t#mm\n",
      "n = 1.       \t\t\t#mole\n",
      "m = 1000 \t    \t\t#gms\n",
      "M = 18.016 \t\t    \t#gms\n",
      "\n",
      "# Calculations\n",
      "a = p1/p2\n",
      "N1 = (m/M)/(n+(m/M))\n",
      "\n",
      "# Results\n",
      "print  'activity  = %.4f '%(a)\n",
      "print  ' activity coefficient  = %.4f '%(N1)\n"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "activity  = 0.9821 \n",
        " activity coefficient  = 0.9823 \n"
       ]
      }
     ],
     "prompt_number": 1
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Example 15.2 Page No : 361"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "\n",
      "# Variables\n",
      "import math \n",
      "M = 0.1 \t\t\t#molal\n",
      "Tf = 0.345 \t\t\t#C\n",
      "k = -9.702*10**-3\n",
      "k1 = -5.2*10**-6\n",
      "\n",
      "# Calculations\n",
      "a = math.e**(k*Tf+k1*Tf**2)\n",
      "\n",
      "# Results\n",
      "print  'activity  = %.4f '%(a)\n"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "activity  = 0.9967 \n"
       ]
      }
     ],
     "prompt_number": 2
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Example 15.3 Page No : 366"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "\n",
      "# Variables\n",
      "import math \n",
      "R = 1.98*10**-4 \t\t\t#cal mole**-1 deg**-1\n",
      "T = 20.          \t\t\t#C\n",
      "E = -0.11118 \t    \t\t#volt\n",
      "n2 = 0.00326\n",
      "n21 = 0.0986\n",
      "\n",
      "# Calculations\n",
      "r = 10**((-E/(R*(273.16+T)))-math.log10(n21)+math.log10(n2))+n21\n",
      "a2 = r*n21\n",
      "\n",
      "# Results\n",
      "print  'a2/N2  = %.3f '%(r)\n",
      "print  ' a2  = %.4f '%(a2)\n",
      "\n"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "a2/N2  = 2.820 \n",
        " a2  = 0.2780 \n"
       ]
      }
     ],
     "prompt_number": 3
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Example 15.4 Page No : 367"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "\n",
      "# Variables\n",
      "n1 = 0.424 \t\t\t#mole fraction\n",
      "a2 = 3.268\n",
      "n = 8.3\n",
      "\n",
      "# Calculations\n",
      "r = a2/(n*n1)\n",
      "\n",
      "# Results\n",
      "print  'a2/N2  = %.3f '%(r)\n"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "a2/N2  = 0.929 \n"
       ]
      }
     ],
     "prompt_number": 4
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Example 15.5 Page No : 368"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "\n",
      "# Variables\n",
      "e = 0.7865 \t    \t\t#volt\n",
      "emf = 0.8085 \t\t\t#emf\n",
      "T = 500.    \t\t\t#C\n",
      "R = 1.98*10**-4 \t\t\t#cal mol6-1 deg**-1\n",
      "n2 = 0.5937\n",
      "\n",
      "# Calculations\n",
      "a2 = 10**((e-emf)/(R*(273+T)))\n",
      "r = a2/n2\n",
      "\n",
      "# Results\n",
      "print  'activity coefficient  = %.2f '%(r)\n"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "activity coefficient  = 1.21 \n"
       ]
      }
     ],
     "prompt_number": 5
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Example 15.6 Page No : 371"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "\n",
      "# Variables\n",
      "import math \n",
      "ac = 1.211\n",
      "n2 = 0.5937\n",
      "\n",
      "# Calculations\n",
      "b = math.log10(ac)/(1-n2)**2\n",
      "\n",
      "# Results\n",
      "print  'Constant  = %.4f '%(b)\n"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Constant  = 0.5037 \n"
       ]
      }
     ],
     "prompt_number": 7
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [],
     "language": "python",
     "metadata": {},
     "outputs": []
    }
   ],
   "metadata": {}
  }
 ]
}