Sulphurous acid () has and . The pH of 0.588 M is (Round off to Nearest Integer)

Question

Sulphurous acid () has  and . The pH of 0.588 M  is  (Round off to Nearest Integer)

Canvas Classes · Accepted Answer

Step 1 — First dissociation dominates (since ):

Step 2 — ICE table (initial  M):

| |  |  |  |
|--|--|--|--|
| Initial | 0.588 | 0 | 0 |
| Change |  |  |  |
| Equil. |  |  |  |

Step 3 — Solve (using quadratic or approximation):

Step 4 — pH:

Answer: 1

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