The Molar Volume of a Gas > Experiment #5 from Advanced Chemistry with Vernier

Figure from experiment 5 from Advanced Chemistry with Vernier

Introduction

In this experiment, you will determine the molar volume of a gas by conducting a chemical reaction that produces a gas, as shown in the reaction equation below.

${\text{Mg}}\left( {\text{s}} \right){\text{ }} + {\text{ 2HCl}}\left( {{\text{aq}}} \right) \to {\text{MgC}}{{\text{l}}_{\text{2}}}\left( {{\text{aq}}} \right){\text{ }} + {\text{ }}{{\text{H}}_{\text{2}}}\left( {\text{g}} \right)$

You will react a known mass of solid magnesium with an excess of hydrochloric acid, in a sealed vessel, and use the pressure change to calculate molar volume at STP.

Objectives

In this experiment, you will

Measure the gas production of a chemical reaction by a pressure change.
Determine the molar volume of the gas produced in the reaction.
Calculate the molar volume of a gas at STP.

Sensors and Equipment

This experiment requires each of the following Vernier sensors and equipment (unless otherwise noted):

Additional Requirements

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

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The student-version preview includes:

Step-by-step instructions for computer-based data collection
List of materials and equipment

Note: The experiment preview of the computer edition does not include essential teacher information, safety tips, or sample data. Instructions for Logger Pro and other software (such as LabQuest App or TI handheld software, where available) are on the CD that accompanies the book. We strongly recommend that you purchase the book before performing experiments.

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The Molar Volume of a Gas