Na2CO3 + NiCl2 �¨ NiCO3 + 2NaCl

Using the solubility rules determine the solubility of all reactants and products. Explain your answer.

I answered Na2 as soluble, Co3 as soluble, NiCl2 as soluble ---->NiCO3 as insoluble, and 2NaCl as soluble. My explanation for the solubles is that it dissolves in a particular liquid. The insoluble compound will not dissolve in a liquid.

I think you have misunderstood the question somewhat. It isn't the ION that is insoluble; it is the compound. Using the solubility rules I posted for you, Na2CO3 is soluble, NiCl2 is soluble, NiCO3 is insoluble and NaCl is soluble.

Your answer is mostly correct, but there are a few details that need clarification.

According to the solubility rules, sodium compounds are generally soluble. So, Na2CO3 (sodium carbonate) is soluble in water. Additionally, chloride compounds are generally soluble, so NiCl2 (nickel chloride) is also soluble in water.

For the products, NiCO3 (nickel carbonate) is considered insoluble in water. Carbonate compounds, except for those of Group 1 metals and ammonium, are generally insoluble. Therefore, NiCO3 does not dissolve in water and remains as a solid.

Lastly, 2NaCl (sodium chloride) is soluble in water, following the general rule that chloride compounds are soluble.

To summarize:
- Na2CO3 is soluble in water.
- NiCl2 is soluble in water.
- NiCO3 is insoluble in water.
- 2NaCl is soluble in water.

Your explanation is correct in stating that soluble compounds dissolve in a liquid, such as water, while insoluble compounds do not dissolve and remain as solids.

To determine the solubility of the reactants and products in the given chemical equation (Na2CO3 + NiCl2 → NiCO3 + 2NaCl), you can refer to the solubility rules.

1. Na2CO3 (sodium carbonate): According to the solubility rules, carbonates (CO3) are generally insoluble, except for those of Group 1 metals (alkali metals) and ammonium (NH4+). Therefore, Na2CO3 is soluble.

2. NiCl2 (nickel chloride): The solubility rules state that chlorides (Cl-) are generally soluble, except for those of silver (Ag+), lead (Pb2+), and mercury (Hg2+). Therefore, NiCl2 is soluble.

3. NiCO3 (nickel carbonate): Referring to the solubility rules, carbonates (CO3) are generally insoluble, except for those of Group 1 metals (alkali metals) and ammonium (NH4+). Therefore, NiCO3 is insoluble.

4. 2NaCl (sodium chloride): As per the solubility rules, chlorides (Cl-) are generally soluble, except for those of silver (Ag+), lead (Pb2+), and mercury (Hg2+). Therefore, NaCl is soluble.

In summary, your answer is correct. Na2CO3 and NiCl2 are soluble, while NiCO3 is insoluble. 2NaCl is also soluble. Your explanation regarding solubility is accurate as well. Soluble compounds dissolve in a particular liquid, forming a homogenous solution, whereas insoluble compounds do not dissolve and remain as solid particles in the liquid.