What Is the Oxidation Half-Reaction for the Reaction of Zinc

question 33

Multiple Choice

What is the oxidation half-reaction for the reaction of zinc with hydrochloric acid?
Zn(s) + 2H⁺(aq) → Zn²⁺(aq) + H₂(g)

• A) Zn(s)→ Zn²⁺(aq)+ 2e−
• B) Zn(s)+ 2e− → Zn²⁺(aq)
• C) 2H⁺(aq)→ H₂(g)+ 2e−
• D) 2H⁺(aq)+ 2e− → H₂(g)
• E) none of the above

---

Definitions:

Double-Declining-Balance Method

A depreciation technique that accelerates the rate at which an asset loses value, doubling the rate of the straight-line depreciation method.

Straight-Line Method

A depreciation technique that allocates an equal amount of depreciation to each year of the asset's useful life.

Depreciation

The planned distribution of the costs associated with a tangible asset over its usage period.

Units-of-Activity Method

A depreciation method that allocates a fixed asset's cost based on its usage, activities, or units of production, reflecting wear and tear more accurately.