Consider a Buffer Solution Made Up of H₂PO₄^- and HPO₄^2-

question 39

Multiple Choice

Consider a buffer solution made up of H₂PO₄^- and HPO₄^2- For H₂PO₄^-, K_a = 6.2 × 10^-8. What mole ratio of HPO₄^2- to H₂PO₄^- will give a pH of 7.35?

• A) 0.14 to 1
• B) 0.72 to 1
• C) 1 to 1
• D) 1.4 to 1
• E) More information is needed to answer this question.

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Definitions:

Inventory Costing

A method used to assign costs to inventory items and determine the cost of goods sold during a period.

Purchase Order

A document issued by a buyer to a seller, specifying the types of products, quantities, and agreed prices for products or services the seller will provide to the buyer.

Inventory

The total amount of goods and materials held by a company that are ready for sale or in the process of being produced.

Perpetual Inventory System

The inventory system in which each purchase and sale of merchandise is recorded in an inventory account.