Factors Affecting the Amount of Carbon Dioxide given off when a Carbonate reacts with an acid

Authors Avatar

Factors Affecting the Amount of Carbon Dioxide given off when a Carbonate reacts with an acid

Introduction

ACID + METAL CARBONATE → METAL SALT + WATER + CARBON DIOXIDE

When an acid reacts with a metal carbonate, a metal salt, water and carbon dioxide are produced. The amount of carbon dioxide produced depends on various factors. The aim of this experiment is to find out how much Carbon Dioxide (CO2) is given off when different masses of Calcium Carbonate (CaCO3) are reacted with Hydrochloric acid (HCl). The factors affecting the amount of CO2 produced are listed below.

Variables

Continuos Variables      

Discontinuous Variables

In my investigation I have chosen to investigate the amount of carbonate rather than the type of carbonate as amount is a continuos variable and will produce a pattern rather than a random collection of carbonates.

 

Constants

The following variables will be kept constant:

Fair Test

In order to make this investigation as fair as possible, all the constant variables must remain constant throughout the experiment, as mass of carbonate is the only variable changing. The experiment must be repeated at least twice so as not to get any anomalous results. The constants must be checked every time a result is taken.

Prediction

The volume of Carbon Dioxide produced will increase directly proportionally with the mass of Calcium Carbonate used.

∴100g of CaCO3 produces 24000cm3 of CO2

∴200g of CaCO3 produces 48000cm3 of CO2

∴300g of CaCO3 produces 72000cm3 of CO2

∴400g of CaCO3 produces 96000cm3 of CO2

From these calculations it is visible to say that doubling the mass of carbonate doubles the volume of Carbon Dioxide produced. Tripling the mass of carbonate triples the volume of Carbon Dioxide produced. The relationship is directly proportional and the graph of mass against volume shows a straight line through the origin.

Join now!

Safety

Acids are corrosive and an irritant. Safety glasses and labcoats must be worn at all times. Wash hands after experiment.

Reacting Moles & Masses

 

∴100g of CaCO3 produces 24dm3 of CO2 as 1 mole of any gas at room temperature and pressure occupies 24dm3.

∴1.0g of CaCO3 produces 240cm3 of CO2

∴0.8g of CaCO3 produces 192cm3 of CO2

∴0.6g of CaCO3 produces 144cm3 of CO2     

∴0.4g of CaCO3 produces   96cm3 of CO2

∴0.2g of CaCO3 produces   48cm3 of CO2 

The relationship is directly proportional and the ...

This is a preview of the whole essay