pH and indicators
pH scale range
0-14
pH scale
A measure of the acidity or basicity (alkalinity) of an aqueous solution
100x more acidic
A solution with a pH of 3 is _________ than a solution with a pH of 5
10x more acidic
A solution with a pH of 4 is ________ than a solution with a pH of 5
Indicator
A substance that changes its color when it gains or loses a proton (H+) -helps identify if a solution is an acid or a base
Logarithmic Scale
Each change of a single pH unit signifies a tenfold change in the (H+)
Each indicator
Has a pH range where it changes color
Both colors
If the solution is at a pH in between the values, the indicator contains _____
Table M
Lists 6 acid-base indicators
pH scale measures
The concentration of Hydrogen ions
Nuetral
pH of 7
Acidic
pH<7 , (H+) > (OH-)
Basic
pH> 7 , (H+) < (OH-)
