Magnesium 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
Method:
1. Take magnesium carbonate solid in a container.
2. Add hydrochloric acid (HCl) solution to the container.
3. Stir the solution until the reaction is completed.
4. Filter the solution to obtain the calcium carbonate powder.
5. Wash the powder with distilled water and dry it.
Balanced chemical equation:
MgCO3 + 2HCl → MgCl2 + CO2 + H2O
Net ionic equation:
MgCO3 (s) + 2H+ (aq) → Mg2+ (aq) + CO2 (g) + H2O (l)
Observation:
When hydrochloric acid is added to magnesium carbonate, it fizzes and releases carbon dioxide gas (CO2), indicating that a chemical reaction is occurring. The solution becomes cloudy as the magnesium carbonate dissolves, and eventually, a white solid precipitate (calcium carbonate) forms. The calcium carbonate can be filtered and obtained as a white powder.
A) Method:
To obtain calcium carbonate powder from magnesium carbonate, we can use a double replacement reaction with a soluble calcium salt. Here's a step-by-step method:
1. Take a small amount of magnesium carbonate powder in a clean beaker.
2. Add a solution of a soluble calcium salt, such as calcium chloride (CaCl2), to the beaker containing the magnesium carbonate.
3. Stir the mixture gently for a few minutes to ensure complete reaction.
4. Allow the mixture to settle down for some time to let any unreacted substances or impurities settle at the bottom.
5. Carefully decant the liquid (supernatant) from the beaker, leaving behind the solid precipitate at the bottom.
6. Collect the solid precipitate and transfer it to a clean filter paper placed in a funnel.
7. Rinse the precipitate with deionized water to remove any traces of impurities.
8. Allow the filter paper with the precipitate to dry completely, either by air drying or by using a drying oven at a low temperature.
9. Once completely dried, carefully remove the filter paper, and you will have obtained calcium carbonate powder.
B) Balanced equation for the reaction:
The balanced equation for the reaction between magnesium carbonate (MgCO3) and calcium chloride (CaCl2) is as follows:
MgCO3 + CaCl2 → MgCl2 + CaCO3
D) Net ionic equation:
The net ionic equation shows only the species actively involved in the reaction. In this case, the ionic compounds will dissociate into their respective ions. The net ionic equation for the reaction would be:
Ca2+ (aq) + CO3^2- (aq) → CaCO3 (s)
E) Observation:
During the reaction and subsequent precipitation, the following observations can be made:
- Initially, a white precipitate will form upon mixing the magnesium carbonate and calcium chloride solutions.
- Over time, the precipitate will settle at the bottom of the beaker.
- The remaining liquid will become clear and colorless.
- The precipitate will appear as a white solid.
- After drying, the precipitate will turn into a fine white powder, which is the calcium carbonate powder obtained.