LIST: SODIUM CARBONATE. CALCIUM CARBONATE. ZINC SULFATE. ZINC NITRATE.

(a) State a pair of chemicals from the list above that can be used to prepare zinc carbonate by precipitation reaction involving mixing 2 aqueous solutions together.

(b) Write a chemical equation for the chemical reaction in part (a).

(c) How would you obtain a pure, dry samples of lead(II) carbonate from the mixture of solution in part (a)?

~ Please Help ~

(a) To prepare zinc carbonate by precipitation, we need two chemicals that when mixed together in aqueous solutions will react to form zinc carbonate. From the provided list, zinc sulfate (ZnSO4) and sodium carbonate (Na2CO3) can be used to prepare zinc carbonate.

(b) The chemical equation for the reaction between zinc sulfate and sodium carbonate to form zinc carbonate can be written as follows:

ZnSO4 + Na2CO3 → ZnCO3 (precipitate) + Na2SO4

(c) To obtain a pure, dry sample of lead(II) carbonate from the mixture of solutions obtained in part (a), you can follow these steps:

1. Filter the mixture: Set up a filtration setup using a filter paper and a funnel. Pour the mixture into the funnel, and collect the filtrate in a clean container. The precipitate, which is lead(II) carbonate, should be left on the filter paper.

2. Wash the precipitate: Wash the precipitate with distilled water to remove any remaining impurities or other soluble substances. Pour a small amount of distilled water onto the collected precipitate, gently stir it, and let it settle. Then, carefully pour off the water, taking care not to lose any of the precipitate.

3. Dry the precipitate: After washing, transfer the wet precipitate onto a clean watch glass or a drying dish. Allow it to air dry until it reaches a constant weight. This process may take several hours or overnight, depending on the quantity of the precipitate.

Note: It is important to handle the chemicals and solutions with caution, wear appropriate protective gear (gloves, goggles), and conduct the experiment in a well-ventilated area.