acids and bases Flashcards
1
Q
what are acids
A
molecules that release hydrogen ions in solution
2
Q
what is the PH of a neutral solution
A
7
3
Q
what is the PH of acidic solutions
A
below 7
4
Q
what is the PH of alkaline solutions
A
above 7
5
Q
what does the PH of a solution affect
A
- the shapes and functions of molecules
- the rates of many chemical reactions
- the ability of 2 molecules to bind to each other
- the ability of ions or molecules to dissolve in water
6
Q
what is a buffer solution
A
a weak acid and its related base
7
Q
what effect do buffers have on PH
A
they help to maintain a constant Ph
8
Q
what can an acid-base buffer system shift
A
it can shift to remove or release H+ to adjust for changes in PH
9
Q
NaOH is dissolved in water. you meassure the PH of this solution and it is 12. what is the H+ concentration in this solution
A
10^-12M
