Verdampingswarmte: Verskil tussen weergawes

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Die '''verdampingswarmte''' is 'n fisiese eienskap van 'n stof. Dit word gedefinieer as die [[warmte]] wat per eenheidsmassa van 'n stof geabsorbeer moet word om 'n hoeveelheid van 'n stof by sy [[kookpunt]] geheel en al te laat verdamp. Die verdampingswarmte word dikwels uitgedruk as kJ/mol (ander eenhede wat ook gebruik word is kJ/kg en BTU/lb (lg. veral in Amerikaanse tegniese publikasies). [[Verdamping]] is die teenoorgestelde proses as [[kondensasie]] en daar kan ook gepraat word van '''kondensasiewarmte'''. Laasgenoemde se waarde is dan ook dieselfde as eersgenoemde en word gedefinieer as die hoeveelheid warmte per eenheidsmassa wat vrygestel moet word om 'n sekere hoeveelheid van 'n stof in sy geheel te laat kondenseer.
 
[[Water]] se [[soortlike verdampingswarmte]] is ongeveer 2260 kJ/kg of dan 40.8 kJ/mol. Die latente
verdampingswarmte van water is hoog: vyf keer die [[soortlike warmtekapasiteit|energie wat benodig]] word om water vanaf 0 tot 100 grade Celsius te verhit.
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== Heats of vaporization of the [[element]]s ==
 
<table border="0" cellpadding="0" cellspacing="0">
<tr><td align="top"><table border="1" cellpadding="2" cellspacing="0">
<tr><th><b>Element</b></th><th><b>Heat of vaporization ([[Kilojoule_per_mole|kJ/mol]])</b></th></tr>
<tr><td>[[Actinium]]</td><td>n/a</td></tr>
<tr><td>[[Aluminium]]</td><td>293.4</td></tr>
<tr><td>[[Antimony]]</td><td>77.14</td></tr>
<tr><td>[[Argon]]</td><td>6.447</td></tr>
<tr><td>[[Arsenic]]</td><td>34.76</td></tr>
<tr><td>[[Astatine]]</td><td>114</td></tr>
<tr><td>[[Barium]]</td><td>142</td></tr>
<tr><td>[[Beryllium]]</td><td>292.40</td></tr>
<tr><td>[[Bismuth]]</td><td>104.8</td></tr>
<tr><td>[[Boron]]</td><td>489.7</td></tr>
<tr><td>[[Bromine]]</td><td>15.438</td></tr>
<tr><td>[[Cadmium]]</td><td>100</td></tr>
<tr><td>[[Caesium]]</td><td>67.74</td></tr>
<tr><td>[[Calcium]]</td><td>153.6</td></tr>
<tr><td>[[Carbon]]</td><td>355.8</td></tr>
<tr><td>[[Cerium]]</td><td>414</td></tr>
<tr><td>[[Chlorine]]</td><td>10.2</td></tr>
<tr><td>[[Chromium]]</td><td>344.3</td></tr>
<tr><td>[[Cobalt]]</td><td>376.5</td></tr>
<tr><td>[[Copper]]</td><td>300.3</td></tr>
<tr><td>[[Fluorine]]</td><td>3.2698</td></tr>
<tr><td>[[Gallium]]</td><td>258.7</td></tr>
<tr><td>[[Germanium]]</td><td>330.9</td></tr>
<tr><td>[[Gold]]</td><td>334.4</td></tr>
<tr><td>[[Hafnium]]</td><td>575</td></tr>
<tr><td>[[Helium]]</td><td>0.0845</td></tr>
</table></td>
<td align="top"><table border="1" cellpadding="2" cellspacing="0">
<tr><th><b>Element</b></th><th><b>Heat of vaporization ([[Kilojoule_per_mole|kJ/mol]])</b></th></tr>
<tr><td>[[Hydrogen]]</td><td>0.44936</td></tr>
<tr><td>[[Indium]]</td><td>231.5</td></tr>
<tr><td>[[Iodine]]</td><td>20.752</td></tr>
<tr><td>[[Iridium]]</td><td>604</td></tr>
<tr><td>[[Iron]]</td><td>349.6</td></tr>
<tr><td>[[Krypton]]</td><td>9.029</td></tr>
<tr><td>[[Lanthanum]]</td><td>414</td></tr>
<tr><td>[[Lead]]</td><td>177.7</td></tr>
<tr><td>[[Lithium]]</td><td>145.92</td></tr>
<tr><td>[[Magnesium]]</td><td>127.4</td></tr>
<tr><td>[[Manganese]]</td><td>226</td></tr>
<tr><td>[[mercury (element)|Mercury]]</td><td>59.229</td></tr>
<tr><td>[[Molybdenum]]</td><td>598</td></tr>
<tr><td>[[Neon]]</td><td>1.7326</td></tr>
<tr><td>[[Neptunium]]</td><td>n/a</td></tr>
<tr><td>[[Nickel]]</td><td>370.4</td></tr>
<tr><td>[[Niobium]]</td><td>696.6</td></tr>
<tr><td>[[Nitrogen]]</td><td>2.7928</td></tr>
<tr><td>[[Osmium]]</td><td>627.6</td></tr>
<tr><td>[[Oxygen]]</td><td>3.4099</td></tr>
<tr><td>[[Palladium]]</td><td>357</td></tr>
<tr><td>[[Phosphorus]]</td><td>12.129</td></tr>
<tr><td>[[Platinum]]</td><td>510</td></tr>
<tr><td>[[Polonium]]</td><td>60.1</td></tr>
<tr><td>[[Potassium]]</td><td>79.87</td></tr>
<tr><td>[[Radium]]</td><td>37</td></tr>
</table></td>
<td align="top"><table border="1" cellpadding="2" cellspacing="0">
<tr><th><b>Element</b></th><th><b>Heat of vaporization ([[Kilojoule_per_mole|kJ/mol]])</b></th></tr>
<tr><td>[[Radon]]</td><td>16.4</td></tr>
<tr><td>[[Rhenium]]</td><td>715</td></tr>
<tr><td>[[Rhodium]]</td><td>493</td></tr>
<tr><td>[[Rubidium]]</td><td>72.216</td></tr>
<tr><td>[[Ruthenium]]</td><td>595</td></tr>
<tr><td>[[Scandium]]</td><td>314.2</td></tr>
<tr><td>[[Selenium]]</td><td>26.3</td></tr>
<tr><td>[[Silicon]]</td><td>384.22</td></tr>
<tr><td>[[Silver]]</td><td>250.58</td></tr>
<tr><td>[[Sodium]]</td><td>96.96</td></tr>
<tr><td>[[Strontium]]</td><td>144</td></tr>
<tr><td>[[Sulfur]]</td><td>1.7175</td></tr>
<tr><td>[[Tantalum]]</td><td>743</td></tr>
<tr><td>[[Technetium]]</td><td>660</td></tr>
<tr><td>[[Tellurium]]</td><td>52.55</td></tr>
<tr><td>[[Thallium]]</td><td>164.1</td></tr>
<tr><td>[[Thorium]]</td><td>514.4</td></tr>
<tr><td>[[Tin]]</td><td>295.8</td></tr>
<tr><td>[[Titanium]]</td><td>421</td></tr>
<tr><td>[[Tungsten]]</td><td>824</td></tr>
<tr><td>[[Vanadium]]</td><td>452</td></tr>
<tr><td>[[Xenon]]</td><td>12.636</td></tr>
<tr><td>[[Yttrium]]</td><td>363</td></tr>
<tr><td>[[Zinc]]</td><td>115.3</td></tr>
<tr><td>[[Zirconium]]</td><td>58.2</td></tr>
<tr><td>[[Methanol]]</td><td>37.4</td></tr>
</table></td></tr>
</table>
 
==Sien ook==
*[[Smeltingswarmte]]
 
[[CategoryKategorie:Chemiese eienskappe]]
[[CategoryKategorie:Fisiese groothede]]
 
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[[ar:حرارة تبخر]]
[[ca:Calor de vaporització]]