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19 Cards in this Set
- Front
- Back
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soluble salts? |
SPAN soluble(sodium potassium ammonium nitrate )
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insoluble salts? |
LSBCL insoluble (lower secondary basic chinese language) 2c3s (lead2 chloride silver chloride barium sulfate calcium sulfate lead2 sulfate) |
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methods of salt preparation |
Precipitation titration Mix,filter concentrate |
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insoluble salts prep method? |
Precipitation |
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insoluble salts prep method? |
Precipitation |
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grp 1 +anmonia salt preparation |
titration |
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insoluble salts prep method? |
Precipitation |
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grp 1 + ammonia salt preparation |
titration |
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soluble salts other than grp 1 + ammonia |
mix filter concentrate |
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process for MFC |
for purification and separation of since sulfate from zinc metal:
1.sulfuric acid is warmed in a beaker
2.zinc powder is added bit by bit with constant stirring into the beaker until no further zinc dissolves in the acid
3.the solution is then filtered to remove the excess zinc powder
4.the FILTRATE of aqueous zinc sulfate is then transferred into an evaporating dish and heated over a bunsen flame until the solution is SATURATED.To TEST FOR SATURATION,dip glass rod into the mixture.if solition is saturated,crystals will form on the glass rod.
5.solution is left to cool for crystalisation to take place
6.the solution is then filtered.Zinc sulfate crystals should be rinsed in cold distilled water and dried between sheets of filter paper.
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process for MFC |
for purification and separation of since sulfate from zinc metal:
1.sulfuric acid is warmed in a beaker
2.zinc powder is added bit by bit with constant stirring into the beaker until no further zinc dissolves in the acid
3.the solution is then filtered to remove the excess zinc powder
4.the FILTRATE of aqueous zinc sulfate is then transferred into an evaporating dish and heated over a bunsen flame until the solution is SATURATED.To TEST FOR SATURATION,dip glass rod into the mixture.if solition is saturated,crystals will form on the glass rod.
5.solution is left to cool for crystalisation to take place
6.the solution is then filtered.Zinc sulfate crystals should be rinsed in cold distilled water and dried between sheets of filter paper.
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why excess metal is used |
excess metal is used so that the acid supplied will be used up
this is needed as unused acid is difficult to remove and will contaminate the pure salt obtained
but excess insoluble substances can be easily removed through filtration
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process for MFC |
for purification and separation of since sulfate from zinc metal:
1.sulfuric acid is warmed in a beaker
2.zinc powder is added bit by bit with constant stirring into the beaker until no further zinc dissolves in the acid
3.the solution is then filtered to remove the excess zinc powder
4.the FILTRATE of aqueous zinc sulfate is then transferred into an evaporating dish and heated over a bunsen flame until the solution is SATURATED.To TEST FOR SATURATION,dip glass rod into the mixture.if solition is saturated,crystals will form on the glass rod.
5.solution is left to cool for crystalisation to take place
6.the solution is then filtered.Zinc sulfate crystals should be rinsed in cold distilled water and dried between sheets of filter paper.
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why excess metal is used |
excess metal is used so that the acid supplied will be used up
this is needed as unused acid is difficult to remove and will contaminate the pure salt obtained
but excess insoluble substances can be easily removed through filtration
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titration process |
preparation of sodium sulfate (titration)
1.20CM2 of sodium hydroxide is added to a conical flask using a pipette
2.a few drops of methyl orange is added to the alkaliin the conical flask.the solution will turn yellow
3.the sulfuric acid is added one drop at a time until the solution turns orange
4.the process is repeated but this time withou the methyl orange indicator. |
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alternative titration |
activated carbon is added to the solution and beaten to remove coloured indicator
the solution is then filtered to remove the charcoal |
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process for precipitation |
obtaining lead2sulfate from aqueous lead2nitrate (precipitation)
sodium sulfate solution/dilute sulfuric acid is added to the lead2nitrate solution in a beaker.precipitate is formed.
the solution is then filtered .the precipitate,lead2sulfate is rinsed with distilled water then dried between pieces of filter paper
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process for precipitation |
obtaining lead2sulfate from aqueous lead2nitrate (precipitation)
sodium sulfate solution/dilute sulfuric acid is added to the lead2nitrate solution in a beaker.precipitate is formed.
the solution is then filtered .the precipitate,lead2sulfate is rinsed with distilled water then dried between pieces of filter paper
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process for precipitation |
obtaining lead2sulfated from SOLID lead2carbonate
must obtain aqueous lead2nitrate first
1.lead2carbonate is added bit by bit into nitric acid with constant stirring until it dissolves no further
2.the mixture is then filtered to remove excess lead2carbonate
3.sodium sulfate solution is then added to the FILTRATE of aq lead2nitrate.a precipitate will be formed
4.the solution is then filtered ,precipitate of lead2 sulfate is then rinsed with distilled water and dried between pieces of filter paper. |
