what type of solution has a high pH?

Correct, a solution with many hydroxide ions (OH-) is a base, such as NaOH, KOH, etc.

Examples of bases:

-Blood

-Antacid

-Baking soda

-Ammonia

-Drano

-Egg whites

Solutions that have a high pH are those that can accept hydrogen ions easily. Upon reaction with acids, which can donate its hydrogen ions, high pH substances can form neutral solution with a pH of 7. However, this is true only for strong acids and bases. Strong bases include those that have reactive hydroxide species like sodium hydroxide (OH) and others are called weak bases like ammonia.

Examples of bases that we use include soaps.

a high PH would be an alkaline or Base as more commonly called. Oven cleaner is a common household base. Also ammonia and bleach. Sodium hydroxide will have the highest PH and is used in most cleaning products and detergents.

Anything above pH 7 is a base

Below 7 is an Acid

7 is Neutral

An alkalic solution, which is a solution with lots of OH- ions

PH1 very strong acid

PH2 strong acid

PH3 strong acid

PH4 medium acid

PH5 and PH6 weak acid

PH7 neutral

PH8 and PH9 weak alkali

PH10 medium alkali

PH11 strong alkali

PH12 strong alkali

PH13 very strong alkali