Ocean Chemistry, Carbon & Acidification — Drills · Grade 12 Science
Chapter: Pollution, Carbon & Climate EvidenceWhat these drills covers
By the end of Ocean Chemistry, Carbon & Acidification you should be able to:
- I can explain how dissolved CO₂ changes carbonate chemistry.
- I can calculate logarithmic pH factors and distinguish acidification from becoming acidic.
2 questions, numeric and written answer, each with a worked explanation.
Vocabulary used: acidification, alkalinity, dissolved inorganic carbon.
Problem 1
pH falls by 1. Find hydrogen-ion concentration factor.
Hints
Write the relationship first; substitute with consistent units.
Answer and explanation
10 times
10¹=10.
Problem 2
Can pH8.0 water be acidified relative to pH8.2?
Answer and explanation
Yes; its pH has declined even though it remains basic.
Response criteria
- State a scientifically accurate conclusion.
- Show the calculation or mechanism that supports it.
- Include units, conditions, or limits where relevant.