Acids And salts Flashcards
1
Q
Acid + metal oxide —->
A
Salt + water
2
Q
Acid + metal hydroxide —–>
A
Salt + water
3
Q
Acid + metal carbonate —–>
A
Salt + water + carbon dioxide
4
Q
What is an acid
A
a substance that forms aqueous solutions with pH of less than 7. Acids form H+ ions in water
5
Q
What is a base
A
a base is a substance with a pH greater than 7
6
Q
What is an alkali
A
a base that dissolves in water to form a solution with pH greater than 7. Lkalis form OH- ions in water.
7
Q
What is the reaction between acids and bases called
A
Neutralisation (acid + base = salt + water )
8
Q
What is the neutralisation reaction in terms of H= and OH- ions
A
H+ (aq)+ OH- (q)—> H2O(l)
9
Q
For every decrease of 1 on the pH scale how much does the concentration of H+ ions increase
A
By a factor of 10
10
Q
A
