Chem T3 - Making insoluble salts & rules of solubility
- Created by: Claudiacumberpatch
- Created on: 10-03-20 17:23
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- Rules of solubility
- Making insoluble salts - precipitation reactions
- 2 soluble salts reacted to make an insoluble salt
- 1.) Add 1 spatula lead nitrate to test tube, add deionised water (so no other ions about) to dissolve it
- 2.) Shake thoroughly so all lead nitrate dissolved, in separate test tube do the same with 1 spatula sodium chloride
- 3.)Tip 2 solutions into beaker, stir so all mixed together, lead chloride should precipitate out (form solid)
- 4.) Put folded filter paper into filter funnel put funnel in conical flask
- 5.) Pour contents of beaker into middle of filter paper make sure doesn't go above filter paper or some solid may dribble down side
- 6.) Swill out beaker with deionised water & tip this into filter paper so all precipitate is out of beaker
- 7.) Rinse contents of filter paper with deionised water so all soluble sodium nitrate is washed away
- 8.) Scrape lead chloride into fresh filter paper & leave to dry in oven or desiccator
- 1.) Common salts sodium, potassium & ammonium always soluble
- 2.) All nitrates always soluble
- 3.) Common chlorides soluble except silver & lead chloride
- 4.) Common sulfates soluble except lead, barium & calcium sulfate
- 5.) Common carbonates & hydroxides insoluble except sodium, potassium & ammonium ones
- Making insoluble salts - precipitation reactions
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