What Is the PH of a Buffer That Results When $\times$

question 52

Multiple Choice

What is the pH of a buffer that results when 0.50 mole of H₃PO₄ is mixed with 0.75 mole of NaOH and diluted with water to 1.00 L? (The acid dissociation constants of phosphoric acid are K_a1 = 7.5 $\times$ 10^-3,K_a2 = 6.2 $\times$ 10^-8,and K_a3 = 3.6 $\times$ 10^-13)

• A) 1.82
• B) 2.12
• C) 6.91
• D) 7.21
• E) 12.44

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Marginal Cost

The cost incurred by producing one more unit of a good or service.

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The gain in satisfaction or utility that comes with the consumption of another unit of a product or service.

Streetlights

Artificial outdoor lighting devices installed on poles, used to illuminate streets and public areas during the night for safety and convenience.

Marginal Benefit

The increment in pleasure or usefulness experienced from consuming or creating an additional unit of a good or service.