If I had a question about complex ions and the problem had a "mixture" of two compounds, how would I know if one of the products formed is going to be a solid or liquid?

I know there are solubility rules, but is there something else you can use to tell?

Equilibria* (complex ions Equilibria)

The solvability rules is your best bet with this type of situation. You could always google the product to read about its state at normal temperatures and pressures.

Would you like me to give you the solvability rules?

Or post the two and see if we know.

If I was taking an exam and I had no solubility rules given...

I.e Pb(NO3)2+NaI==> PbI2 + NaNO3

I know NO3 will dissolve in water, but if I didn't know if PbI2 was solid or aqueous, how would i figure that out?

and Al(3+)+ 6F- ===> [AlF6]^3- (aq)

There is no way out of memorizing the solubility rules for things like PbI2, PbSO4, BaSO4, CuI, etc. You can Google solubility rules and look for the one you like best. I always told my students to memorize them. Frankly, I never did BUT I used them so often when I was in high school and undergraduate school that I ended up "just knowing them" which I guess the purist would say was memorizing them. I've been at this now for about 70 years and one pops up now and then I'm not sure about but those won't show up for you at this stage of the game. For complex ions, I wouldn't swear this would ALWAYS ALWAYS ALWAYS be right but most complex ions are soluble and liquid in water solution.

To determine if one of the products formed in a mixture of two compounds is going to be a solid or liquid, you can use the concept of precipitation and solubility rules. Precipitation occurs when two aqueous (dissolved in water) solutions are mixed, resulting in the formation of an insoluble product known as a precipitate.

Here's a step-by-step approach to determine if the product will be a solid or liquid:

1. Identify the compounds involved: Determine the chemical formulas of the compounds in the mixture.

2. Determine the possible products: If the compounds can undergo a chemical reaction and form new substances (complex ions or otherwise), determine the possible products.

3. Check the solubility rules: Consult solubility rules to determine the solubility of each potential product. Solubility rules provide guidelines on which compounds are soluble (forming aqueous solutions) and which are insoluble (forming solids or liquids).

4. Compare the potential products with the solubility rules: If one of the potential products obtained from the chemical reaction is an insoluble compound according to the solubility rules, it will likely be a solid. Conversely, if all the potential products are soluble according to the solubility rules, the products will remain in the liquid state.

It is crucial to note that solubility rules are not absolute and may have exceptions. Thus, experimental data or additional factors may also need to be considered in some cases.

Remember, solubility rules provide a general guideline, and specific experimental data or more detailed knowledge of the compounds involved may be required for complete certainty.