All of the Following Solutions Are Buffers EXCEPT

question 14

Multiple Choice

All of the following solutions are buffers EXCEPT

• A) 100 mL of 0.500 M H₂PO₄− added to 100 mL of 0.200 M HPO₄²⁻.
• B) 100 mL of 0.200 M HF added to 200 mL of 0.200 M NaF.
• C) 200 mL of 0.200 M HCl added to 200 mL of 0.400 M CH₃CO₂−.
• D) 200 mL of 0.500 M NaOH added to 200 mL of 1.000 M HF.
• E) 200 mL of 0.400 M HCl added to 100 mL of 0.200 M CH₃CO₂−.

---

Definitions:

Budgeted Expenditure

Planned spending for a specific period as outlined in a budget, which serves as a financial plan and guideline for managing expenses.

Actual Expenditure

The real amount of money spent on goods, services, and other expenses during a specific period.

Variable Overhead Variances

The difference between the actual variable overhead incurred and the standard cost assigned to production, indicating efficiency or inefficiency.

Efficiency Variance

The difference between the actual input used in production and the standard input expected, calculated to assess performance.