What Combination of Substances Will Give a Buffered Solution That

question 161

Multiple Choice

What combination of substances will give a buffered solution that has a pH of 5.05? Assume each pair of substances is dissolved in 5.0 L of water. (K_b for NH₃ = 1.8 × 10^-5; K_b for C₅H₅N = 1.7 × 10^-9)

• A) 1.0 mol C₅H₅N and 1.5 mol C₅H₅NHCl
• B) 1.0 mol NH₃ and 1.5 mol NH₄Cl
• C) 1.5 mol NH₃ and 1.0 mol NH₄Cl
• D) 1.5 mol C₅H₅N and 1.0 mol C₅H₅NHCl
• E) none of these

---

Definitions:

Competitive Advantage

A condition or circumstance that puts a company in a favorable or superior business position compared to its competitors.

Organisational Outputs

The results or outcomes produced by an organization, including products, services, and any other measurable achievements.

Resource Inputs

Resource inputs refer to the essential materials, financial assets, and human skills required for the production process in businesses or projects.

Technology

The application of scientific knowledge for practical purposes, especially in industry and in our daily lives.