acids and alkalis Flashcards
1
Q
what do acids produce?
A
H+ ions
2
Q
what do alkalis produce?
A
OH- ions
3
Q
what is a base?
A
chemical that neutralises acids
4
Q
what is the pH of an acid?
A
0-6
5
Q
what is the pH of a neutral substance?
A
7
6
Q
what is the pH of an alkali?
A
8-14
7
Q
how can we determine pH of a substance with a pH probe?
A
determines pH electronically
8
Q
how can we determine pH of a substance with indicator?
A
green shows neutral solution
red shows acidic solution
purple shows alkali solution
9
Q
what is the neutralisation reaction between acids and alkalis?
A
H+ + OH- -> H2O
