Question

if a substance has a ph that is greater than that of water, it is
a buffer.
acidic.
a salt.
alkaline.
neutral.

Explanation:

The pH of pure water is 7. Substances with a pH greater than 7 are alkaline. Buffers resist pH - change, acids have pH < 7, salts can have various pH values, and neutral substances have pH = 7.

Answer:

alkaline.