Acids exam questions Flashcards
1
Q
What makes a salt
A
The H+ ion in an acid has been replaced by a metal ion
2
Q
How does a substance act as a base when it neutralises an acid
A
Accepts a proton OR accepts H +
3
Q
Old samples of magnesium oxide become contaminated with magnesium carbonate.
(i) Suggest how this contamination takes place.
A
Solid dissolves / disappears
Fizzing / bubbles
MgO + 2HCl → MgCl2 + H2O
4
Q
How would observation of the reactions with hydrochloric acid allow the identification of the white solid?
calcium carbonate and carbon dioxide
A
CaCO3 fizzes/ gas given off/ gas evolved / carbon dioxide evolved
5
Q
Define an acid.
A
a proton donor
6
Q
state one other large-scale use of
ammonia
A
manufacture of explosives/ dyes/ nitric acid/ fibres/ ammonium nitrate/ cleaning agents/ fertiliser
