Calculate the PH of a 0 $\times$ 10^-9):
A)4

question 41

Multiple Choice

Calculate the pH of a 0.69 M solution of pyridine (C₅H₅N;K_b = 1.7 $\times$ 10^-9) :

• A)4.47
• B)5.07
• C)9.53
• D)8.93
• E)none of these

---

Definitions:

Education Tool

An education tool is any device, software, or resource used to enhance teaching and learning processes.

Relationship Marketing

Developing and maintaining long-term, cost-effective exchange relationships with partners.

Electronic Commerce

The buying and selling of goods and services, or the transmission of funds or data, over an electronic network, primarily the internet.

Market Segmentation

The practice of dividing a market into distinct groups of buyers with different needs, characteristics, or behaviors.