Question

Which of the following has the highest pH?

Multiple choice question.

A)
pure water


B)
vinegar


C)
ammonia


D)
vitamin C

Answer 1

C Ammonia

Pure water is neutral, so pH is about 7

Vinegar is acidic, pH is around 2-3

Ammonia is alkaline, pH around 11.6

Vitamin C is also acidic, pH is around 3.5 to 6

As pH increases with how alkaline the substance is, substances with a lower pH is more acidic, while substances with a higher pH is more alkaline

the question is asking for the highest pH, so you should choose the most alkaline substance

therefore the ans is C, which is ammonia