Solution boiling point hinges on its
dissolved substance amenity yawns. If it dissolved substance more volatile than
its dissolving (inferior dissolved substance boiling point), therefore solution
boiling point becomes inferior of its dissolving boiling point or said by
solution boiling point is down. Its example is ethyl alcohol solution in its
boiling point water inferior of 100 °C but overbids of 78,3 °C (ethyl alcohol
boiling point 78,3 °C and water boiling point 100 °C). If it dissolved
substance don't volatile (are not volatile or nonvolatile ) than its
dissolving (higher dissolved substance boiling point), therefore solution
boiling point becomes to overbid from its dissolving boiling point or said by
solution boiling point ascends. On ethyl alcohol solution example in that
water, if looked on by its dissolving is ethyl alcohol, therefore solution
boiling point also rise. Solution boiling point ascension because of descent of
solution vapour pressure. Based jurisdictional koligatif's character solution,
solution boiling point ascension of purification dissolving boiling point its
straight equal with solution molality.
Base hantar's energy its electricity,
solution can get electrolyte character or nonelektrolit. Solution who can
deliver electricity current called by solution that gets electrolyte character.
Solution that can't deliver electricity current called by solution that gets
nonelektrolit's character. On electrolyte solution, one that deliver
electricity current is ion ion that exists in that solution. On negative
electrode (cathode) positip's ion catches electron (happening reacts
reduction), meanwhile on positip's electrode (anode) undone negative ion
electron (happening reacts oxidation). If in solution has no ion, therefore
that solution can't deliver electricity current.
Electrolyte compound is compound one if be
dissolved into water will most ion (or most ionization). Electrolyte compound
can be differentiated as strong electrolyte compound and compound electrolyte
rans down. Strong electrolyte compound is compound underwater one most perfect
ion or approaching perfect, so that compound the whole lot or as almost all
changed as ion. Included compound compound strong electrolyte is:
a.
Acid strength, its example: HCl, HBr, HI, H 2 SO 4 , HNO 3
, HCLO 4
b.
Basa is strength, its example: NaOH, KOH, Ba (OH) 2 , Sr (OH) 2
Substance substance with structured chemical
kindred one generally gets each other get mingling with every consideration,
meanwhile structured substance substance its different chemical by and large
reducing can mutually get mingling (like dissolves like) . Compound that gets
character polar will be easily leach in dissolving polar, meanwhile compound
nonpolar will be easily leach in dissolving nonpolar. Its example is alcohol
and water gets perfect mingling (completely miscible) , water and ether
gets to mix a portion (partially
miscible),meanwhile oil and nots
water get mingling (completely
immiscible) .
b.
Temperature influence on solubility
Solubility gases generally dwindling on
superordinate temperature. E.g. if water is heated, therefore evoked secretory
gas bubbles from within water, so gas that most water-soluble that becomes
dwindling. Mostly solubilities solid substance it be even greater on
superordinate temperature. There are several solid substance that its solubility
decreases on superordinate temperature, e.g. sulphate sodium and sulphate
cerium. On saturated solution to be gotten kesetimbangan among processes
dissolution and crystallizing process be back. If one of process gets
endoterm's character, therefore contrariwise process gets eksoterm's character.
If temperature is raised, therefore in accordance with principality Le
Chatelier (Henri Louis Le Chatelier: 1850 - 1936)kesetimbangan is shifting toward
endoterm's process. So if processes dissolution to get endoterm's character,
therefore its solubility increases on superordinate temperature. On the
contrary if processes dissolution to get eksoterm's character, therefore its
solubility decreases on superordinate temperature.
solubility
Pb (NO. 3 ) 2
KCl
Na 2 SO 4
NaCl
. Na 2 SO 4 .10H 2
O
Ce
2 (SO 4 ) 3
temperature
Image 1. subjective curve among salt umpteen
solubility with temperature.
c. Pressure influence on solubility
Its
influence pressure change little to hydrogen solubility or thickly. Pressure
change as big as 500 atm just revamp NaCl's solubilities about 2,3 % and NH 4
Cl is vicinity 5,1 %. solubility gases to equal pressure partial that
gas. Legally Henry (William is Henry: 1774 - 1836)mass gases that melarut in to amount to
liquid particular (its dissolving) straight equal with pressure that did by
that gas (pressure partial ), one that lies deep kesetimbangan with that
solution. Its example is oxygen solubility in crescent water as 5 times if
pressures partial -the is raised 5 times. This law is inoperative for
gas what do react with dissolving, e.g. HCl or NH 3 in water.
3. Solution concentration
Solution
concentration declares for a lot of dissolved substance in to amount to
solution particular. Physics ala concentrates to get is declared for deep %
(percent) or ppm (part per
million)= bpj (a part about
million). In chemical concentrates stated solution in molar (M ), molal (m ) or
normal (N ). 4
a. Molaritas (M )
Molaritas declares for to foot up dissolved
substance mole in each solution liter.
As
much 1,11 g CuCl 2 dissolved into 100 g waters. If water type mass 1
g / mL, Cu's relative atomic mass = 40 and Cl's relative atomic masses = 35,5,
therefore accounts that solution concentration is deep:
a. Molar
b. Molal
c. Normal
Answer:
molar
CuCl's mass 2 = 40 + (2 x 35,5 ) = 111 g / moles
Water
volume = mass: type mass = 100 g: 1 g / mL = 100 mL
CuCl's
mole 2 = mass: molar's mass = 1,11 g: 111 g / moles = 0,01 mole
If
solution volume = water volume, therefore
a. M CuCl 2 = (mole: mL) x 1000
mL / l = (0,01 mole: 100 mL) x 1000 mL / l = 0,1 M
b. m CuCl 2 = (mole: g ) x 1000 g
/ kg = (0,01 mole: 100 g) x 1000 g / kg = 0,1 m
c. CuCl 2 (aq)? ? Cu 2 + (aq)+
2 Cl -
(aq)
Cu 2 + (aq)+
2 e ? ? Cu (s )
2
equivalent electron moles with 1 CuCl's mole 2 . So n = 2 ek /
moles.
N
CuCl 2 = n x moles: L = 2 ek / moles x 0,001 mole: 0,1 L = 0,2 N
Solution is mixed one get homogeneous character among molecule,
atom or ion even of two substances or more. Called by mixture because formation
it or its composition can changed. Called homogeneous because susunanya so
uniform so can't observe to mark sense disparate part, even with optical
microscope even if.
Solution phase can tangible gas,
thickly or even moltens. Solution gases e.g. air. Solid solution e.g. bronze,
amalgam and the other alloy. Molten solution e.g. oceanic water, sugared
solution in water, etc.. Solution component consisting of dissolving (solvent)
and dissolved substance (solute) . On solution works through this
part molten.
Molten dissolving by and large
is water. Thes other molten dissolving e.g. bensena, chloroform, ether, and alcohol.
If its dissolving don't water, therefore its dissolving name is named. E.g.
salt solution in solutions so-called alcohol salt in alcohol (said alcohol),
but salt solution in solutions so-called water salt (unsaid water). Dissolved
substance can as substance of solid, gas or moltens. Solid substance most
water-soluble e.g. sugar and salt. Gas most water-soluble e.g. ammonia, carbon
dioxide, and oxygen. Hydrogen most water-soluble e.g. alcohol and vinegar.
Generally solution component that its amount more a lot of at conceive of
dissolving. Solution 40 % alcohols with 60 % water were called by alcoholic
solution. Solution 60 % alcohols with 40 % water were called by solution
alcohol deep waters. Solution 60 % sugars with 40 % water were called by solution
sugars because in that solution water visually unchanged whereas changed sugar
from padatan (crystal) as dissolved (taking after water).
2. Solubility
A sands sugared crystal constitute affiliate of some sugar
molecule. If that sugar crystal is inserted into water, therefore sugar
molecules will diqoin from sugared crystal surfaces wend into water (called by
melarut). That sugared molecule moving at random as movement of water molecule,
so at the moment gets menumbuk sugared crystal surface or the other sugar
molecule. Partly sugared molecule will tie-up back with its crystal or mutually
conjoined with thes other sugared molecule so back to crystalize (mengkristal
re). If sugared dissolution runaway speed equals recrystallizing runaway speed,
therefore that process liesdeep kesetimbangan and its solution is called
saturated. Sugared crystalwater sugared solution
Saturated solution is solution
that contain dissolved substance in number required just for marks sense
kesetimbangan among solute one that dissolved and undissolved one. A lot
of it solute one that melarut in dissolving one a lot of particular to
result a saturated solution to be called solubility (solubility)
that substance. Solubility by and large stated in dissolved
substance gram per 100 mL dissolvings, or about 100 dissolving grams on given
temperature. If substance solubility less than 0,01 gram per 100 dissolving
grams, therefore that substance is said not leach (insoluble) .
If amount solute one that
dissolved less than its solubility, therefore its solution is called not
saturated (unsaturated) .
Solution is not saturated more dilute (insufficiently stiff) as compared to
saturated solution. If amount solute one that dissolved more a lot of of
its solubility
As
as photosynthesis process on carbon
cycle , the sun also gets essential role in hidrologi's cycle . The
sun constitutes energy source that pushes water cycle, heating ocean deep water and salt water.
Effect this instillation, water yawns as steam go to to air. 90 % water that
yawn to come from ocean. Ice and snow can also sublimate and directly becomes
steam. Besides all, also happens evapotranspirasi water happens from plant and
yawning from earth that adds to foot up water that enters atmosphere.
After
previous water as steam, Rising air current take that steam is moving up to
atmosfir. Excelsior a place, its air temperature will get low. Its following is
temperature chills at atmosphere causes steam bead as cloud. For case one
particular, steam b erkondensasi at surface earths and form fog.
Air
current (wind)taking
in worldwide moving steam. There are many process meteorology happening
on sectioned it. Particle apprehends to bump, growing, and water fells from sky
as precipitation. Severally precipitation falls as snow or hail, sleet, and
gets most accumulated as ices as and glacial, one that gets to keep frost water
for thousands years. Snowpack (solid snow) can molten and melting, and water
moltens is adrift at aboveground as snowmelt (slushy snow). Largely water fells
to surface and return to oceanic or go to earth as rain, where does water be
adrift at aboveground as limpasan permukaan.
One
part of limpasan comes in river, drain, time, valley, etc.. All that flow is
moving making for ocean. partly limpasan becomes ground water be kept as
freshwater at lake. Are not all limpasan is adrift go to river, there are many
that meresap into soiled as infiltration. Infiltrat is water goes away into
earth and charges akuifer, one that constitute freshwater shop for the duration
that so long. Partly infiltration makes a abode close to surface soil and can
seep to return to water body surface (and oceanic) as debit of ground water.
Severally soiled find aperture at surface soil and sticking out as wellspring
of freshwater. Along with time, water returns to to go out to sea, whereabouts hidrologi's
cycle we start.
ROLE
IN BIOGEOKIMIA'S CYCLE
Besides hidrologi's
cycle are biogeokimia's cycle own, current upon and under earth is component
key from rotation biogeokimia's cycle another. Responsible Limpasan for nearly all
sediment transportation abrades and phosphorus of land go to to warm up water.
Ocean salinity comes from erosion and dissolved salt transportation of soiled.
Eutrofikasi is lake especially reverential phosphorus, applied more for
agricultural area at manures, and then transported by land river and down.
Limpasan and ground water flow play essential role in nitrogenic transportation
of soiled to warm up water. Off zona at outlet An River Mississippi constitute
consequence of nitrate of manure most takes in agricultural area and be
channelled to river system goes to Gulf Of Mexico. Limpasan also play role in
carbon cycle, once more via stone transportation abrades and earth
