KPT 3013 KPT 3013 1 PREPARATION PREPARATION OF SOLUBLE SALT OF SOLUBLE SALT
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PREPARATION PREPARATION
OF SOLUBLE SALTOF SOLUBLE SALT
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Salt Preparation
Salt type(Na+, K+, NH4
)
salt type Except (Na+, K+, NH4)
Soluble salts Insoluble salts
Acid +Alkaline Acid + Metallic oxide
Acid + metallic carbonate
Acid + Metal
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Acid + Alkali SaltAcid + Alkali Salt
HHCl Cl + + NaNaOH OH NaCl + H NaCl + H22OO KOH + HBr KBr + H2OKOH + HBr KBr + H2O Neutralization reactionNeutralization reaction
acid + alkali react with each other acid + alkali react with each other form salt & waterform salt & water
HH++(acid) + (acid) + OHOH--(alkali) H(alkali) H22O(waterO(water ClCl--(-ve of acid) + (-ve of acid) + Na Na (+ve from (+ve from
alkali) alkali) salt(NaCl) salt(NaCl)
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(HCl + NaOH) NaCl
Titration method
Evaporation/Heating
Cooling/crystallization
Filtration
Dry
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Add metallic oxide/metal/carbonate oxide
Heating
Filtration
Zn + 2HClZn + 2HCl ZnClZnCl2 2 + H+ H22
Recrystallisation
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Heating Filtration
Evaporation
Dry Filtration
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Titration
Burette
HClRetort stand
25 ml NaOH + phenolphthalein
(2 drops)
Erlenmeyer Flask
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Evaporation/HeatingEvaporation/Heating
Heat
Triport Stand
Heat the salt solution until
saturated~1/3 from initial
volume
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Cooling/crystallization
Salt
Crystal
Crystallization
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FiltrationFiltration
Salt crystal
Filter paper
Filter funnel
Filtered solution
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DryDry
Filter paper
Soluble salt
crystal
Dried by
filter paper
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Add metallic metal/metal/metallic carbonate powder until saturated
Rode glass
30ml acid
Metallic metalCuO/MgO/ZnO
MetalZn/Mg
Metallic carbonateZnCO3/ MgCO3/CuCO3
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HeatingHeating
Rode glasssalt solution
Heat
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EvaporatiEvaporation on
Rode glassSalt solution
Heat
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FiltrationFiltration
Saturated salt crystal
Rode glass
Filter paperRemainder:
metallic oxide/excess metal
Salt solution
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FFiltrationn
Rode glass
Pure salt crystal
salt solution
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Salt crystal Salt crystal characteristiccharacteristic
Flatted surfaceFlatted surface Straight sideStraight side Shape edgeShape edge Uniform Uniform
geometrygeometry Degree between Degree between
neighboring neighboring surface is surface is constantconstant
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HeatingHeating
Impurities salt solution
Heat
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FiltrationFiltration
Rode glass
Impurities salt solution
Remainder
Salt solution
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EvaporationEvaporation
Heat
Rode glassSalt
solution
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FiltrationFiltration
Rode glass
Remainder
Salt solution
Impurities salt
solution
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FFiltrationn
Rode glass
Pure salt crystal
salt solution