\( \mathrm{P} \) WV components can be altered by changing the press...
0\( \mathrm{P} \)
WV
components can be altered by changing the pressure.
to increase the pressure on the system, the volume has
moles per unit volume will now be more and the
decrease in number of moles i.e, towards the direction in which there can be decrease in pressure.
in which there can be decrease in pressure. Effect of pressure on melting point : There are two
types of solids: (a) Solids whose volume decreases on melting. e.g.
ice, diamond, carborundum, magnesium nitride and quart. Solid (higher volume) \( \rightleftarrows \) Liquid (lower volume)
Solid (higher volume) \( \rightleftarrows \) Liquid (lower volume) The process of melting is facilitated at high pressure. thus meling point is lowered.
thus melting point is lowered. - (b) Solids whose volume increase on melting, e.g. Fe. Cu. Ae. Au, etc
Solid (lower volume) \( \rightleftharpoons \) Liquid (higher volume) In this case the process of melting become difficull
at high pressure; thus meting point becomes high.
are dissolved in water, either heat is evolved
(exothermic) or heat is absorbed (endoth
In such cases, solubility increase with increase in
ismperature. Consider the case of KOH; when
\( \mathrm{KOH}+\mathrm{aq} \rightleftharpoons \mathrm{KOH}(\mathrm{aq})+ \) heat
In such cases, solubility decrease with increase in mperature.
(d) Solubility of gases in liquids : When a gas
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Above equilibrium is favoured at :
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(B) High pressure high temperature
(C) Low pressure, high temperature
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