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{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Chapter19 Statistical Mechanics"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 19.1,Page no.73"
]
},
{
"cell_type": "code",
"execution_count": 1,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Wabc = 6\n",
"Waab = 3\n",
"Waaa = 1\n"
]
}
],
"source": [
"import math\n",
"#initialisation of variables\n",
"Na=1\n",
"Nb=1\n",
"Nc=1\n",
"Na1=2\n",
"Nb1=1\n",
"Nc1=0\n",
"Na2=3 \n",
"Nb2=0 \n",
"Nc2=0 \n",
"#CALCULATIONS \n",
"Wabc=math.factorial(Na+Nb+Nc)/(math.factorial(Na)*math.factorial( Nb)*math.factorial(Nc))\n",
"Waab=math.factorial(Na1+Nb1+Nc1)/(math.factorial(Na1)*math.factorial(Nb1)*math.factorial(Nc1))\n",
"Waaa=math.factorial(Na2+Nb2+Nc2)/(math.factorial(Na2)*math.factorial(Nb2)*math.factorial(Nc2))\n",
"#RESULTS\n",
"print 'Wabc =',Wabc\n",
"print 'Waab =',Waab\n",
"print 'Waaa =',Waaa"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 19.2,Page no.74"
]
},
{
"cell_type": "code",
"execution_count": 2,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Enthalpy = 36.586 cal degˆ−1 moleˆ−1\n"
]
}
],
"source": [
"import math\n",
"#initialisation of variables\n",
"K=4.9860 # cal degˆ−1 moleˆ−1\n",
"K1=-31.6 # cal degˆ−1 moleˆ−1\n",
"#CALCULATIONS\n",
"S=K-K1\n",
"#RESULTS\n",
"S=round(S,3)\n",
"print 'Enthalpy =',S,'cal degˆ−1 moleˆ−1'"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 19.4,Page no.74"
]
},
{
"cell_type": "code",
"execution_count": 3,
"metadata": {
"collapsed": false
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Transitional energy 31.704 cal degˆ−1 mole ˆ−1\n",
"rotational energy = 5.916 cal degˆ−1 mole ˆ−1\n"
]
}
],
"source": [
"import math\n",
"#initialisation of variables\n",
"No=0.979889\n",
"v=2989.74 #cmˆ−1\n",
"rc=1.2746 #A\n",
"T=25 #C\n",
"E1=6.8635 # cal degˆ−1 moleˆ−1\n",
"E2=11.4392 # cal degˆ−1 moleˆ−1 \n",
"E3= 7.2820 # cal degˆ−1 moleˆ−1 \n",
"E4= 4.5757 # cal degˆ−1 moleˆ−1 \n",
"E5= 2.7676 # cal degˆ−1 moleˆ−1 \n",
"r1= 0.265 #A \n",
"r= 35.99 #A \n",
"#CALCULATIONS \n",
"Et=E1*math.log10(r)+E2*math.log10 (273.15+T)-E3\n",
"Ei=E4*math.log10(r1)+E4*math.log10 (273.15+T)-E5\n",
"#RESULTS\n",
"Et=round(Et,3)\n",
"Ei=round(Ei,3)\n",
"print 'Transitional energy',Et,'cal degˆ−1 mole ˆ−1'\n",
"print 'rotational energy =',Ei,'cal degˆ−1 mole ˆ−1'"
]
}
],
"metadata": {
"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
}
|
