   # Vitamin C has the formula C 6 H 8 O 6 . Besides being an acid, it is a reducing agent. One method for determining the amount of vitamin C in a sample is to titrate it with a solution of bromine, Br 2 , an oxidizing agent. C 6 H 8 O 6 (aq) + Br 2 (aq) → 2 HBr(aq) + C 6 H 6 O 6 (aq) A 1.00-g "chewable" vitamin C tablet requires 27.85 ml of 0.102 M Br 2 for titration to the equivalence point. What is the mass of vitamin C in the tablet? ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

#### Solutions

Chapter
Section ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 4, Problem 76PS
Textbook Problem
178 views

## Vitamin C has the formula C6H8O6. Besides being an acid, it is a reducing agent. One method for determining the amount of vitamin C in a sample is to titrate it with a solution of bromine, Br2, an oxidizing agent.C6H8O6(aq) + Br2(aq) → 2 HBr(aq) + C6H6O6(aq)A 1.00-g "chewable" vitamin C tablet requires 27.85 ml of 0.102 M Br2 for titration to the equivalence point. What is the mass of vitamin C in the tablet?

Interpretation Introduction

Interpretation:

The mass of vitamin C C6H8O6 in the tablet has to be determined.

Concept introduction:

•  The relation between the number of moles and mass of the substance is ,

Numberofmole=MassingramMolarmass

Massingramofthesubstance=Numberofmole×Molarmass

• The molar mass of an element or compound is the mass in grams of 1 mole of that substance, and it is expressed in the unit of grams per mol (g/mol).
• For chemical reaction balanced chemical reaction equation written in accordance with the Law of conservation of mass.
• Law of conservation of mass states that for a reaction total mass of the reactant and product must be equal.
• Stoichiometric factor is a relationship between reactant and product which is obtained from the balanced chemical equation for a particular reaction.
• Amountof substance=Concentrationofsubstance×volumeofthesubstance
• Titration is a method to determine the concentration of a substance in solution by adding a solution of known volume and concentration until the reaction is completed.

### Explanation of Solution

Balanced chemical equation for the given reaction is,

C6H8O6(aq)+Br2(aq)2HBr(aq)+C6H6O6(aq)

From the balanced chemical equation it is clear that vitamin C, C6H8O6 and Bromine (Br2) react in a 1:1ratio.

The amount (moles) of Br2 used in the titration can be calculated from its volume and concentration as follows,

AmountofBr2 = CBr2×VBr2 =0.102molL×0.02785L =0

### Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

#### The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Find more solutions based on key concepts
A built environment can support physical activity with a. safe biking and walking lanes. b. public parks. c. fr...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

Why did classical astronomers conclude that Earth had to be motionless?

Horizons: Exploring the Universe (MindTap Course List)

22-18 Draw the structures of L- and D-valine.

Introduction to General, Organic and Biochemistry

Initially, the system of objects shown in Figure P5.49 is held motionless. The pulley and all surfaces and whee...

Physics for Scientists and Engineers, Technology Update (No access codes included)

How does an enzyme affect the activation energy Section 18-3 of a reaction?

Introductory Chemistry: An Active Learning Approach

Do we know of the existence of other water planets?

Oceanography: An Invitation To Marine Science, Loose-leaf Versin 