Calcium carbonate is white is insoluble solid occurring naturally as chalk, limestone, marble and calcite.It is a useful building material. Divise a way of making some calcium carbonate from substance provided. Obtain it as powder
A). Method
B).Write balanced equation for the reaction used
D).Net ionic equation
E)Observation
A). Method: React vinegar (acetic acid) with calcium carbonate (in the form of limestone, chalk or marble) to produce calcium acetate, water, and carbon dioxide gas. Collect the gas and allow the mixture to dry, resulting in powdered calcium carbonate.
B). Balanced equation: CaCO3 + 2CH3COOH → Ca(CH3COO)2 + H2O + CO2
D). Net ionic equation: CaCO3 + 2H+ → Ca2+ + CO2 + H2O
E). Observation: Effervescence (bubbling) of carbon dioxide gas, formation of calcium acetate solution, and the production of a white powder (calcium carbonate) upon drying.
A) Method: One way to make calcium carbonate from a provided substance is by using a precipitation reaction.
1. Collect a substance that contains calcium ions (Ca2+) and carbonate ions (CO32-). This substance could be calcium oxide (CaO) or calcium chloride (CaCl2), for example.
2. Dissolve the substance in water to form a solution.
3. Add a carbonate-containing compound, such as sodium carbonate (Na2CO3), to the solution. This will cause a precipitation reaction to occur, resulting in the formation of calcium carbonate.
4. Allow the mixture to settle for some time. The calcium carbonate will precipitate out of the solution as a solid.
5. Collect the precipitated calcium carbonate by filtering the mixture. The solid collected will be in the form of a powder.
B) Balanced equation for the reaction used: The balanced equation for the reaction between calcium ions and carbonate ions to form calcium carbonate is as follows:
Ca2+ + CO32- → CaCO3
D) Net ionic equation: The net ionic equation shows only the species that participate in the reaction, with spectator ions omitted. In this case, the net ionic equation is as follows:
Ca2+ + CO32- → CaCO3
E) Observation: During the precipitation reaction, you will observe the formation of a white precipitate, indicating the formation of calcium carbonate. As the mixture settles, the precipitate will settle at the bottom, and upon filtration, the solid will be obtained as a white powder.