Carbonated water, also known as sparkling water, is water into which carbon dioxide gas has been dissolved. This process

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Carbonated water, also known as sparkling water, is water into
which carbon dioxide gas has been dissolved. This process is called
carbonating. A group of students are given two brands of
carbonated water and asked to determine which brand contains more
dissolved carbon dioxide.Using your knowledge of chemistry,
describe how the students could determine which brand of carbonated
water contains more dissolved carbon dioxide.
(3 marks) (Open-ended
question)
This is a past paper question from National 5 chemistry, so
please provide an answer using National 5 or GCSE chemistry
knowledge.
Thank you!