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Acids/alkalis, salts
Chemistry
| Question | Answer |
|---|---|
| Litmus paper: | Red litmus paper will turn blue when dipped in alkali, blue litmus paper will turn red when dipped in acid. |
| Phenolpthalein: | Turns from colourless (acid) to pink (alkali). |
| Methyl orange: | Turns from red (acid) to yellow (alkali). |
| What are acids a source of? | Positive hydrogen ions H+ |
| What are alkali's a source of? | Negative hydroxide ions OH- |
| Acid + metal -> | Salt + hydrogen |
| Acid + metal oxide -> | Salt + water |
| Acid + metal hydroxide -> | Salt + water |
| Acid + carbonate -> | Salt + carbon dioxide + water |
| All common sodium, potassium & ammonium salts are what? | Soluble. |
| All nitrates are what? | Soluble. |
| Common chlorides (with the exception of silver chloride) are what? | Soluble. |
| Common sulfates (except those of barium & calcium) are what? | Soluble. |
| Common carbonates (except those of sodium, potassium & ammonium) are what? | Insoluble. |
| So basically, all salts are soluble APART FROM: | Silver chloride, barium/calcium sulfate & common carbonates. |
Created by:
eloiseis