CHEMISTRY REPORT
Introduction
Erosion of metallic substances and solid rocks depend on various factors. Some inhibit the reaction while others catalyze the reaction. For example, the surrounding PH and the chemical composition of the substances. In this case, the investigation of the effect of nitric acid in the erosion of marble will be considered
Hypothesis and Prediction
The hypothesis states: Marble may erode in a shorter time because of the concentration of nitric acid in the rain in higher.
Prediction
Acids are corrosive and tend to impact different reactions depending on their concentration. Due to this scientific fact, it can be predicted that erosion of marble may be more in water containing nitric acid.
Equipment
The equipment will be used in giving accurate results in the experiment and also used in prevention measures against the corrosive acid. Don't use plagiarised sources.Get your custom essay just from $11/page
Clamp Stand
Boss
Clamp
Conical flask
Rubber bung
Delivery tube
Measuring cylinder
Funnel
Weighing boat
Top pan balance
Spatula
Gas syringe
Safety goggles
Gloves
Stopwatch
Reagents
0.5M HCL
1.0M HCL
2.0MHCL
3 grams of Calcium Carbonate chips/powder
Variables
The concentration of HCL acid.
The volume of HCL acid.
The mass of Calcium Carbonate.
Hazards and Risks
Effervesce will occur in the experiment, which may be risky to the eyes. Therefore, safety goggles should enhance safety.
Corrosion of the hands may occur. Gloves prevent corrosion
Errors in this experiment are minimized by using calibrated equipment such as the conical flask.
Method
First, measure an equal amount of the HCL using a measuring cylinder in the experiment.
Use three different clean conical flasks and add an equal amount of the HCL measured and label their different concentrations.
Add I gram of calcium carbonate in each flask and start the stopwatch to determine the time used by each acid to erode with the Calcium Carbonate.
The rate of effervescing will determine the time the reaction stops.
Finally, record the time used by the consecutive reactions.