Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
Chemical Reactions--Need Help!?
I need help writing out these reactions, meaning the reactant and the product. Also, there are a few questions in some of them about the reactions(i.e. the one with the precipitate) Please put the number of the one you solved next to your answer. If you can balance it, that'd be awesome. Thanks so much!
1) Iron reacts with oxygen gas to form one product. Iron gets a +2 charge in the product.
2) Sodium Iodide breaks down by electrolysis to its constituent elements.
3)sodium iodide reacts with lead(II) nitrate to form two products. One of the products forms a precipitate. Name and describe this precipitate.
4) Copper metal reacts with silver nitrate to form two products, one is a compound and the other is an element. Describe and name the substance that forms on the outside of the copper wire.
5) Methane burns in oxygen gas to form two products.
Again, thanks a lot. I couldn't figure these out, maybe you guys will. ;-)
2 Answers
- Anonymous1 decade agoFavorite Answer
1.) 2Fe(s) + O2(g) -> 2FeO(s) (this is how rust is formed :D)
2.) 2NaI(s) -> 2Na(s) + I2(s?)
3.) 2NaI(aq) +Pb(NO3)2(aq) --> 2NaNO3(aq) +PbI2(s)
Lead Iodide is the precipitate and it is a solid.
4.) Cu + 2AgNO3 --> Cu(NO3)2 +2Ag
Silver forms around the copper wire and it looks like grayish/shiny icicles (I have done this experiment myself)
5.) CH4(g) + 2O2(g) --> 2H2O(g) + CO2(g)
All combustions reactions require a molecule and a oxygen molecule and form water and carbon dioxide. Also, over the yields sign, draw a delta (triangle lookin thing, it means heat was used as a catalyst).
Hope this helps!
- Anonymous1 decade ago
1.) 2 Fe + O2 ---> 2 FeO(s)
2.) 2 NaI ---> 2 Na(s) + I2(s)
Both sodium and iodine will be solids because that is their standard states, I believe
3.) 2 NaI + Pb(NO3)2 ---> 2 NaNO3 + PbI2(s)
Lead iodide is the precipitate that forms and it is yellow in color.
4.) Cu + 2 AgNO3 ---> Cu(NO3)2 + 2 Ag
Silver is what will be plated onto the copper wire
5.) CH4 + 2 O2 --> 2 H2O + CO2
The products of any combustion reaction are carbon dioxide and water vapor
Hope this helps! Sorry if I made any mistakes