What Is the PH of a Buffer That Consists of 0.20

question 47

Multiple Choice

What is the pH of a buffer that consists of 0.20 M NaH₂PO₄ and 0.40 M Na₂HPO₄? For NaH₂PO₄, K_a = 6.2*10¯⁸

• A) 6.51
• B) 6.91
• C) 7.51
• D) 7.90
• E) 8.13

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Definitions:

Reasonable Amount

an amount or quantity that is considered fair, appropriate, or moderate under the circumstances.

Counteroffer

A response to an offer in a negotiation, where the original offer is rejected and a new offer is presented.

Original Offer

The initial proposal or bid made in a negotiation or business agreement.

Reasonable Means

Methods or procedures that are practical and sensible, often used to achieve a certain outcome with minimal resources.