HELP NEEDED ASAP PLZZZ

1. Consider the following acid-base equilibrium:
| HCO3 + H2O
In the reaction above, the Brönsted-Lowry acids are
A. H2O and OH
B. HCO3 and OH
C. H2O and H2CO3
D. HCO, and H. CO,
2. As the [H2O+) in a solution decreases, the (OH-)
A. increases and the pH increases.
B. increases and the pH decreases.
C. decreases and the pH increases.
D. decreases and the pH decreases.
3. What is the pOH of 2.5 M NaOH?
A. -0.40
B. 0.0032
C. 0.40
D. 13.60
4. A 0.010M acid solution has a pH of
A. 1
B.6
C.4
D. 2