Vernier Software & Technology

# Baking Soda and Vinegar Investigations

## Introduction

Sodium bicarbonate is a widely used compound with the formula NaHCO3. It is also known as baking soda, bicarbonate of soda, cooking soda, and sodium hydrogen carbonate. Vinegar is a dilute solution of acetic acid, HC2H3O2, made by the fermentation of wine or some other solution containing ethanol.

Baking soda reacts with acetic acid in vinegar to produce carbon dioxide gas, water, and an aqueous solution of sodium acetate according to the equation:

${\text{NaHC}}{{\text{O}}_{\text{3}}}{\text{(s) + H}}{{\text{C}}_{\text{2}}}{{\text{H}}_{\text{3}}}{{\text{O}}_{\text{2}}}{\text{(aq)}} \to {\text{C}}{{\text{O}}_{\text{2}}}{\text{(g) + }}{{\text{H}}_{\text{2}}}{\text{O(1) + Na}}{{\text{C}}_{\text{2}}}{{\text{H}}_{\text{3}}}{{\text{O}}_{\text{2}}}{\text{(aq)}}$

## Objectives

In the Preliminary Activity, you will gain experience using a Temperature Probe as you determine the temperature change when 2.00 g of baking soda is added to and reacts with 50.0 mL of vinegar.

After completing the Preliminary Activity, you will first use reference sources to find out more about baking soda and vinegar before you choose and investigate a researchable question dealing with the properties of baking soda and/or vinegar or the reaction between them.

## Sensors and Equipment

This investigation features the following Vernier sensors and equipment.

### Option 2

You may also need an interface and software for data collection. What do I need for data collection?

## Investigating Chemistry through Inquiry

See other experiments from the lab book.

 1 Physical Properties of Water 2 Baking Soda and Vinegar Investigations 3 An Investigation of Urea-Containing Cold Packs 4 Conductivity of Aqueous Solutions 5 Identifying a Pure Substance 6 Investigating the Energy Content of Foods 7 Investigating the Energy Content of Fuels 8 Evaporation and Intermolecular Attractions 9 Enthalpy Changes 10 Reaction Stoichiometry 11 Beer's Law Investigations 12 Colligative Properties of Solutions 13 Long Term Water Monitoring 14 Vapor Pressure and Heat of Vaporization Investigations 15 Acid-Base Properties of Household Products 16 The Effect of Acid Deposition on Aqueous Systems 17 Acid-Base Titrations 18 Conductimetric Titrations 19 Oxidation-Reduction Titrations 20 Investigating Voltaic Cells 21 Baking Soda and Vinegar Investigations Revisited 22 Reaction Rates 23 Enzyme Activity 24 Sugar Fermentation by Yeast 25 Nuclear Radiation

### Investigation 2 from Investigating Chemistry through Inquiry Lab Book

#### Included in the Lab Book

Vernier lab books include word-processing files of the student instructions, essential teacher information, suggested answers, sample data and graphs, and more.