Instruct: Classify the following sentence into a predefined topic category:
Which will have a lower pH? (a) 2M HCl (b) 2M H3PO4 (c) 2M NH3 (d) 2M NaOH?
Assign it to one of the following topics:[Society & Culture, Science & Mathematics, Health, Education & Reference, Computers & Internet, Sports, Business & Finance, Entertainment & Music, Family & Relationships, Politics & Government]
Output: