Question

32) Home and Garden pH Indicators Beets Very basic solution changes from red to purple. Blueberries Blue pH 2.8-3.2. Turn red as solution becomes more acidic. Cherries Red in acidic solution; turns blue/purple in basic solution. Curry Powder Curry's pigment curcumin changes from yellow at pH 7.4 to red at pH 8.6. Beet juice is added to a unknown solution and changes color from red to purple. Curry powder, added to the same solution, turns a deep red color. What can you tell about the hydrogen/hydroxide ion concentration of the unknown liquid?

Answer 1

the answer is high OH- Low OH

Answer 2

Answer is: there are more hydroxide ions (OH⁻) in this unknown liquid than hydrogen ions (H⁺), because change of the the colors of curry powder and beet juice show that pH of unknown solution is higher than seven.
When pH is below 7, solution is acidic, pH greater that 7 solution is basic and pH equals to 7, solution is neutral.
Concentration of OH⁻ ions is higher than H⁺ ions in basic solutions.