Reactions with acids Flashcards
(18 cards)
what is a base
a substance that reacts with acids in neutralisation reactions
when an acid reacts with a metal, what is oxidised and what is reduced
oxidised = the metal
reduced = hydrogen
what is a neutralisation reaction
a reaction between an acid and a base to produce water
what are the products from a reaction between metal carbonate and an acid
salt + water + carbon dioxide
what is the ionic equation for a reaction between an acid and alkali
H+(aq) + OH-(aq) -> H20(l)
what are the products from a reaction between metal oxide and an acid
salt + water
what are the products from a reaction between metal hydroxide and an acid
salt + water
what are the products from a reaction between a reaction between a metal and an acid
salt + hydrogen
which type of salts do sulfuric acid, hydrochloric acid and nitric acid make
-sulfuric acid = sulfates
-hydrochloric acid = chlorides
-nitric acid = nitrates
what is a salt
a compound formed when a metal ion takes the place of a hydrogen ion in an acid
what is a weak acid
An acid where the molecules only partially ionise in water
what is a strong acid
An acid where the molecules completely ionise in water
how do you measure the pH of a substance
universal indicator or pH probe
what are the names and formulae of the 3 main acids
-hydrochloric acid = HCl
-Sulfuric acid = H2SO4
Nitric acid = HNO3
In terms of H+ ions, what is an acid
A substance that releases H+ ions when dissolved in water
what pH is alkali
More than 7
what pH is neutral
7
what pH is an acid
less than 7
