Rate Of Reaction Temperature

Authors Avatar

T An Investigation To Show How Changing The Temperature Of The Hydrochloric Acid Affects The Speed Of The Reaction Between The Marble Pieces And Hydrochloric Acid

Variables

  In this experiment there are many variables which can be sorted into two groups-continuous and non-continuous.  The variables are listed:

-Size of conical flask (non-continuous)

-Acid concentration-add water to the Hydrochloric Acid to lower the concentration (continuous)

-Acid temperature- e.g. 30 C (continuous)

-Type of acid- e.g. Hydrochloric Acid, Sulphuric Acid and Nitric Acid (non-continuous)

-Size of Calcium Carbonate chips-surface area of Calcium Carbonate (continuous)

-Mass of Calcium Carbonate (continuous)

-Acid’s volume- e.g. 30cm  (continuous)

-Form of Calcium Carbonate- powder or stones (non-continuous)

The variable that I have decided to change in this experiment is the temperature of the Hydrochloric Acid.

Quantitative Prediction

  In this experiment I predict that if I increase the temperature of the Hydrochloric Acid by 10 C, then the time taken for the reaction between the marble (Calcium Carbonate) pieces and the Hydrochloric Acid will approximately half.  For example, if the original time taken is 60 seconds when the Hydrochloric Acid is measured at 20 C, then when the Hydrochloric Acid is at 30 C the time taken for the reaction will now be approximately 30 seconds.

  The reason for this theory is that as the temperature increases, particles will gain the minimal amount of activation energy needed for a collision.  Therefore there will be more collisions which increases the percentage of successful collisions overall.  As a result of this, there will be more overall collisions every 2 seconds, which then leads to an increase of successful collisions every second.

  More successful collisions will therefore decrease the overall time taken.

Fair Test

  To ensure that my experiment will be kept fair, I will keep all of the variables the same except for the one that I will be changing (temperature of the Hydrochloric Acid).  I will also clean the equipment after use (washing out the conical flask, marble pieces etc.) to make sure they don’t effect any other results.  I will weigh out the marble chips twice and use the electrical scales to ensure accuracy over weight.  To increase the reliability of my experiment and to make it fairer I will repeat each of the experiments for all of the temperatures three times to get an average.  This will make my results more reliable.

Join now!

Equipment List

Listed is the set of equipment I will be using for my experiment:

-Conical flask

-Stopper

-Delivery tube

-Beaker

-Two Measuring Cylinder’s

-Stopwatch

-Marble pieces (Calcium Carbonate)

-Goggles

-Thermometer

-Hydrochloric Acid

-Water

-Bunsen Burner

-Weighing Machine

-Spatula

-Lighter

Diagram

Safety

  To ensure that my experiment is safe I will take care with chemicals and wipe up any spillages.  Also, to protect any contact of chemicals with me eyes I am ...

This is a preview of the whole essay