Discussion: Please create typed responses that are 4 to 6 sentences in length. R
ID: 576961 • Letter: D
Question
Discussion: Please create typed responses that are 4 to 6 sentences in length.
Reaction 2: Marble and Acid CaCO3 (s) + 2 HCl (aq) CaCl2 (aq) + H2O (l) + CO2 (g) 1. Place a small marble chip (composed of CaCO3) in a test tube and add about 2mL of DI water. Record your observations. 2. Carefully add about 1mL (about 20 drops) hydrochloric acid solution (HCl) and record your observations over a period of about two minute
2
Water with marble chip
Changed slightly to translucent
With HCL the chip starts to release the gas
LD gaseous solution
Considering the results of Reaction 2, how do you think marble architecture and statues would be affected by acid rain? Support your answer with your observations and consider the states in the chemical equation.
2
Water with marble chip
Changed slightly to translucent
With HCL the chip starts to release the gas
LD gaseous solution
Explanation / Answer
The hydrochloric acid reacts with marble in a neutralization reaction. The calcium chloride that is produced in the reaction is soluable in water. This causes the marble to dissolve and crumble. In this reaction, the original acid converts to water.This reaction is similar to the reaction that happens when acid rain reacts with marble in natural surroundings. When there is less calcium carbonate in a region, acid rain tends to affect this area more heavily than in an area where limestone or marble is part of the environment.