can you help me with this

Question

Which of the following species can be Brønsted-Lowry acids? Check all that apply.

H2CO3
H2SO4

CH3 COO
3-
PO4

X

None of the above

Answer 1

H2CO3, H2SO4, and CH3COO- can all be Brønsted-Lowry acids. So the correct answers are:

H2CO3
H2SO4
CH3COO-