Acids And Bases Flashcards
What is the definition of an acid
A substance which produces more hydrogen ions than hydroxide ions when dissolved in water
What is the definition of an alkaline
A soluble base that produces more hydroxide ions than hydrogen ions when dissolved in water
Acidic solutions can be prepared from …
Non-metal oxides
Alkaline solutions can be prepared from …
Metal oxides
What is an example of making a acidic solution?
If you know…
Explain the experiment.
Burning carbon with oxygen
Burn the carbon and place in a sealed jar with oxygen. Add water and indicator, solution will turn red.
(metal oxide)
Name an example of how you make an alkaline solution?
Reacting Magnesium with oxygen. You must then dissolve it in water to create an alkaline or leave it for base.
(metal oxide)
What are the symbols for hydrogen and hydroxide ions
Hydrogen - H+
Hydroxide - OH-
State a real life example of a neutralisation reaction.
Treatment of a bee sting (methanoic acid) with baking soda (household base)
what are the 4 main reactions of acids and metals
- acid + metal
- acid + metal oxide
- acid + metal carbonate
- acid + metal hydroxide
Acid + metal oxide ->
Salt + water
Acid + metal hydroxide ->
Salt + water
Acid + alkali ->
Salt + water
Acid + metal carbonate ->
salt + water + carbon dioxide
Acid + metal ->
Salt + hydrogen
What are the endings of the acids
Chloride
Sulfate
Nitrate
What is the formula for hydrochloric acid
HCl
What si the formula for sulfuric acid
H2SO4
What is the formula for nitric acid
HNO3
what type of reaction is metal oxide + acid
- neutralisation
this is becasue we produce water
what is the definition of a salt
hydrogen ions in the acid have been replaced by metal ion(s) or ammoniom ion
what is the best way to make a salt
reacting acids with insoluble metal carbonates is the easiest way to make sure it is completly neutralised
why is a reacting acids with metal carbonates the best way to make a salt?
(there are 4 points)
- no heat involved
- when fizzing has stopped you then know that neutralisation is complete
- you can see left over carbonate at the bottom
- left over can easily be filtered at the end
is a hydroxide alkaline or acidic
alkaline
