{ "metadata": { "name": "", "signature": "sha256:504d1c6e130519bd52ac789c89a6f8e08c6f8ebcef05a86769153cb6fef7a117" }, "nbformat": 3, "nbformat_minor": 0, "worksheets": [ { "cells": [ { "cell_type": "heading", "level": 1, "metadata": {}, "source": [ "Chapter 9 : Entropy determination and Significance" ] }, { "cell_type": "heading", "level": 2, "metadata": {}, "source": [ "Example 9.1 Page No : 191" ] }, { "cell_type": "code", "collapsed": false, "input": [ "\n", "# Variables\n", "import math \n", "w = 35.46 \t\t\t#gms\n", "T = 298.2 \t\t\t#K\n", "Qc = 4.03 \n", "\n", "# Calculations\n", "S = 4.576*(1.5*math.log10(w)+2.5*math.log10(T)+math.log10(Qc)-0.5055)\n", "\n", "# Results\n", "print 'Standard entropy = %.1f cal deg**-1 g atom**-1'%(S)\n" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "Standard entropy = 39.4 cal deg**-1 g atom**-1\n" ] } ], "prompt_number": 2 }, { "cell_type": "heading", "level": 2, "metadata": {}, "source": [ "Example 9.2 Page No : 195" ] }, { "cell_type": "code", "collapsed": false, "input": [ "\n", "# Variables\n", "import math \n", "M = 28. \t \t \t#gms\n", "T = 25. \t \t\t#C\n", "I = 13.9*10**-40 \t\t\t# gcm**2\n", "s = 2\n", "\n", "# Calculations\n", "S = 4.576*(1.5*math.log10(M)+2.5*math.log10(273.2+T)-0.5055)\n", "S1 = 4.576*(math.log10(I)+math.log10(273.2+T)-math.log10(s)+38.82)\n", "\n", "# Results\n", "print 'Standard entropy = %.1f E.U.mole**-1'%(S)\n", "print ' Standard entropy = %.1f E.U.mole**-1'%(S1)\n" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "Standard entropy = 35.9 E.U.mole**-1\n", " Standard entropy = 9.8 E.U.mole**-1\n" ] } ], "prompt_number": 3 }, { "cell_type": "heading", "level": 2, "metadata": {}, "source": [ "Example 9.3 Page No : 196" ] }, { "cell_type": "code", "collapsed": false, "input": [ "\n", "# Variables\n", "import math \n", "T = 25. \t\t\t#C\n", "I = 4.33*10**-40 \t\t\t# gcm**2\n", "I1 = 2.78*10**-40 \t\t\t#g cm**2\n", "s = 3\n", "\n", "# Calculations\n", "S = 4.576*(0.5*math.log10(I1**2*I)+1.5*math.log10(273.2+T)-math.log10(s)+58.51)\n", "\n", "# Results\n", "print 'Standard entropy = %.1f cal deg**-1 mole**-1'%(S)\n" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "Standard entropy = 11.5 cal deg**-1 mole**-1\n" ] } ], "prompt_number": 4 }, { "cell_type": "heading", "level": 2, "metadata": {}, "source": [ "Example 9.4 Page No : 198" ] }, { "cell_type": "code", "collapsed": false, "input": [ "\n", "# Variables\n", "Sco = 47.3 \t\t \t#cal deg**-1 \n", "Sh2 = 31.21 \t\t\t#cal deg**-1\n", "Sc = 1.36 \t\t \t#cal deg**-1\n", "Sho = 16.75 \t\t\t#cal deg**-1\n", "\n", "# Calculations\n", "S = Sco+Sh2-Sc-Sho\n", "\n", "# Results\n", "print 'Standard entropy = %.2f cal deg**-1 mole**-1'%(S)\n" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "Standard entropy = 60.40 cal deg**-1 mole**-1\n" ] } ], "prompt_number": 5 }, { "cell_type": "code", "collapsed": false, "input": [], "language": "python", "metadata": {}, "outputs": [] } ], "metadata": {} } ] }