What Quantity of Charge Is Required to Reduce 31

question 50

Multiple Choice

What quantity of charge is required to reduce 31.2 g of CrCl₃ to chromium metal? (1 faraday = 96,485 coulombs)

• A) 3.80  10⁴ C
• B) 7.60   10⁴ C
• C) 5.70  10⁴ C
• D) 1.74  10⁵ C
• E) 1.90  10⁴ C

---

Definitions:

Labour Rate Variance

The difference between the actual labor costs incurred and the standard labor costs for the actual production level.

Actual Rate

The actual cost incurred or the price paid for materials, labor, or overhead as opposed to budgeted or standard costs.

Standard Rate

A predetermined cost that is often used in budgeting and costing exercises to estimate the expected rate for services or products.

Direct Labour

The cost associated with employees who are directly involved in the production process.