M Prep | MCAT 2015 Question of the Day - Prep, Practice Questions, and More!

Q:

Solid NaOH is hygroscopic, meaning it absorbs moisture from the air. A student places solid NaOH into a weighing dish and leaves the sample out for too long before weighing it. The student then dissolves the NaOH and uses the solution in a titration of an acid. The measured amount of the acid will therefore be

A

less than the actual amount of acid

B

greater than the actual amount of acid

C

equal to the actual amount of acid

D

the answer cannot be determined with the given information