Lesson: Chapter 12 — Electrochemistry

12.3. Corrosion and rusting 4 of 5 Reset answers

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Question 4

What does anhydrous calcium chloride do in activity 12.3.3?

A Adds oxygen B Coats the nails C Absorbs water vapour D Speeds up rusting

The right answer is the one marked above.

Absorbs water vapour. The air in that tube is dry, so the nails inside do not rust.

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