Vitamin C Is a Monoprotic Weak Acid, Which Also Is

question 55

Multiple Choice

Vitamin C is a monoprotic weak acid, which also is called ascorbic acid (C₆H₈O₆, 176 g/mol) . A vitamin C tablet weighing 0.75 g was dissolved in 50.0 mL of water and titrated with 0.250 M sodium hydroxide. It took 12.5 mL of the NaOH solution to reach the end point. What is the percentage of vitamin C in the tablet? Only the vitamin C reacted with the NaOH.

• A)98.7%
• B)64.2%
• C)87.7%
• D)95.5%
• E)73.3%

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Definitions:

Equivalent Units

A concept in cost accounting used to estimate the amount of finished goods produced from raw materials and partial productions.

Units Transferred Out

In a production or manufacturing process, this refers to the number of units completed and moved out of a process or department during a given period.

Weighted-Average Method

An inventory costing method that calculates the cost of goods sold and ending inventory based on the average cost of all items available for sale during the period.

First-In, First-Out Methods

An inventory valuation method where the first items produced or purchased are the first ones sold, affecting the cost of goods sold and inventory valuation.