# precipitate

1. ### Two hydroxides; which will precipitate

Im struggling with this question: Im not looking for the answer, maybe just an example of how to do a similar question. Any help you can offer is much appreciated. Suppose two hydroxides, YOH and Z(OH)2, both have Ksp=1/0*10^-12 and that initially both Y+ and Z^2+ are present in a solution of...
2. ### Mass of Precipitate formed

Hello. I've used this site for several months and have recieved a lot of help from the members. However, I just joined the forum and this is my first post! The question I'm working on doesn't seem all that difficult; the real problem is that my professor and textbook give two different methods...
3. ### Confused About Precipitate Reactions

So we are doing precipitant reactions and class and I have a couple quick questions. First, why when Na2 and NO3- get combined the 2 on the Na goes away and it just becomes NaNO3? Another question. I had two ionic compounds, NaF and CaCl2 The precipitate formed in CaF2. Whys the two there...
4. ### Precipitates and Excess Reagents

Given a solution 5.16g of aluminum nitrate is dissolved into 77.0mL of water and then is added to 113mL of a 0.234M solution of potassium carbonate, answer the following questions: A) Write out a complete balanced molecular equation including states of matter. B) Write out the net ionic...
5. ### Precipitate? :(

A solution containing 0.2M HF also contains 0.3M Ca(NO3)2. HCI is added slowly until the solution has a pH of 2.8. Will a precipitate of CaF2 occur? For the HF, Ka = 6.46 x 10 ^-4 : and for the CaF2, ksp = 2.69 x 10^-11. Not exactly sure where to start. but im sure i could figure it out after...
6. ### Will a precipitate form?

If 75.0mL of a 0.0010M aqueous solution of Fe(NO3)2 was added to 100.0mL of a 0.00050M aqueous solution of NaOH would a precipitate form? How would I do this? I thought I would first draw out the molecular and net ionic equations: Fe(NO3)2 + 2NaOH --> Fe(OH)2 + 2NaNO3 Fe2+ (aq) + 2OH- (aq)...
7. ### Precipitate Reactions

Give the formula of the precipitated compound. Write if it does, doesn't produce precipitate. a) a solution of NH4 I mixed with a solution of Fe SO4: I understand a/d, c/b so NH4 goes with SO4 and Fe with I, and that NH4+ salts are soluble and I- is soluble so there will be no precipitate...
8. ### Will Silver Bromide react with Paradichlorobenzene?

I need to find a solution that will react with paradichlorobenzene that will form a precipitate, or result in a change in pH, so that I can measure the rate of reaction. I am wondering if silver bromide will react with the paradichlorobenzene to form paradibromobenzene and silver chloride...