Rate of Reaction Between Marble Chips and Hydrochloric Acid

Reaction Rate of Marble Fragment and Hydrochloric Acid The purpose of this experiment is to investigate how various variables affect the reaction rates of marble chips (CaCO 3) and hydrochloric acid (HCl). There are many factors that influence reaction speed as follows. Temperature Concentration (Gas Pressure) Catalyst Surface Area My research is to test how to change the concentration of hydrochloric acid.

I anticipate that adding a small piece of marble to hydrochloric acid makes the reaction faster and therefore more gas (carbon dioxide) released. This is due to the large surface area of ​​small marble fragments. Addition of large marble chips to hydrochloric acid slows the reaction rate, resulting in less gas evolution. This is because marble chips have small surface area. This means that using smaller marble chips can produce 100 cubic centimeters of carbon dioxide faster.

In this experiment, a large amount of marble and a large amount of hydrochloric acid were placed in an Erlenmeyer flask and fluff was used to collect absorbent cotton. When carbon dioxide is released from the flask, the mixture loses its mass and is measured and recorded every minute until the reaction is complete. I repeated the experiment again using the same quality marble chips and the same volume of hydrochloric acid at the same temperature, but using small marble fragments. When observing our results, we discovered that larger marble debris requires more time to react than smaller marble debris, which shows an increase in reaction rate as the surface area increases .

In this survey we use CaCO 3 in the form of marble chips and react these chips with hydrochloric acid. The equation for this is as follows. PURPOSE: We are investigating whether the temperature affects the reaction rate of the experiment. The experiment I am doing is how temperature influences the release rate of gas when hydrochloric acid is added to calcium carbonate in the form of a marble chip. 2HCL (aq) + CaCO 3 (s)? H 2 O (I) + CO 2 (g) + CaCl 2 (aq) Preliminary experiment program, evaluation and prediction