The Molar Conductivity of a 0

question 6

Multiple Choice

The molar conductivity of a 0.010 mol dm^-3 solution of propanoic acid, C₂H₅COOH, has been measured to be 2.25 mS m² mol^-1 at 298 K. The ionic conductivity of hydronium, H₃O⁺, ions is 34.96 mS m² mol^-1 and of propanoate, C₂H₅COO^-, ions is 26.3 mS m² mol^-1 at this temperature. Determine the acid dissociation constant of propanoic acid at 298 K.

• A) 2.88  10^-8
• B) 3.67  10^-4
• C) 1.91  10^-3
• D) 1.35  10^-5

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Definitions:

Perpetual Inventory System

An accounting technique that instantly records the sale or purchase of inventory using computerized point-of-sale systems and enterprise asset management software.

FIFO

"First In, First Out," an inventory valuation method where goods first added to inventory are the first ones to be sold.

Ending Inventory

The worth of items ready for sale at the conclusion of an accounting cycle, determined by adding the initial inventory to acquisitions and subtracting the cost of goods sold.

Perpetual Inventory System

A financial recording approach that instantly logs inventory transactions upon sale or purchase using electronic point-of-sale systems and enterprise resource planning software.