chemical reactions - acids reacting with metals Flashcards
1
Q
what do all acids contain?
A
hydrogen
2
Q
acid + metal ->
A
salt + hydrogen
3
Q
give an example of half equations for the this reaction
hydrochloride acid + magnesium -> magnesium chloride + hydrogen
A
Mg -> Mg2+ + 2e-
2H+ + 2e- -> H2
this is the same for all acids + metals
4
Q
how does magnesium react with dilute acid?
A
rapid reaction. forms Mg2+
5
Q
how does zinc react with dilute acid?
A
quite easily. forms Zn2+
6
Q
how does iron react with dilute acid?
A
less easily. forms Fe2+
