SOMEONE PLEASE HELP‼️‼️
Background:
Calcium carbonate, CaCO3, can be produced from the double replacement reaction between sodium carbonate and calcium chloride. The solutions when mixed together form an insoluble solid that can be retrieved through filtration. Calcium carbonate is a major component of the sedimentary rock limestone. Limestone rock is often used in buildings and monuments. Grinding limestone rock into small particle sizes can be used for chalk, plaster and cement. Geologist can confirm the identification of limestone rock by dropping a few drops of hydrochloric acid onto the rock to check for gas evolution. The following equation describes the reaction between the hydrochloric acid and the calcium carbonate present in limestone rock.
2 HCI + CaCO: - H20 + COz + CaCl
The reaction between limestone and acidic underground water has been responsible for the production of beautiful caves and caverns, such as Mammoth Cave in Kentucky and Luray Caverns in West Virginia. A source of acidic groundwater comes from acid rain. Acid rain is formed when nonmetals oxides, released by the combustion of fossil fuels, react with water vapor. This acid rain causes damage to limestone structures and seeps into the ground water.
Procedure:
1) Obtain two 250-mL beakers. Using a graduated cylinder pour exactly 50mL of distilled water into each beaker.
2) Then add 2.5 grams of NazCO3 to one beaker and 3.5 grams of CaCl to the other beaker. Stir each beaker with a stirring rod. Observe.
3) Then transfer the contents of one beaker into the other beaker. Stir. Observe.
4) Obtain a piece of filter paper and record the mass.
5) Filter the solution. Once you have poured all the contents of the beaker into the funnel, pour approximately 10-15mL of water into the beaker and then over the solid. This will rinse the beaker and the solid in the filter paper.
6) Once filtration is finished, carefully pull the filter paper out of the funnel and place onto a few sheets of paper towels. Write your name on the paper towel and place in a location specified by your teacher. The mass of your product will be obtained later.
7) Rinse the beaker with the chalk appearance with vinegar and then with water.
Observation:
Appearance of sodium carbonate solution: The solution is colorless and clear.
Appearance of calcium chloride solution: The solution is colorless and clear.
Appearance of solution mixture: The solution is white and cloudy.
Data:
Mass sodium carbonate used: 2.5g
Mass of calcium chloride used: 3.5g
Mass of filter paper: 0.70g
Mass of filter paper and chalk: 2.50g
