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Acids/alkalis, salts

Chemistry

QuestionAnswer
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
 

 



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