Hello,I need some help on writing these reaction equations Assume that solutions are aqueous unless otherwise indicated. Represent substances in solution as ions if the substances are extensively ionized. Omit formulas for any ions or molecules that are unchanged by the reaction.Could you explain how to do so, as well (the steps)? Such as the steps from the molecular equation.1. A bar of iron metal is added to a solution of iron(III) chloride.2. Concentrated ammonia solution is added to copper(II) sulfate solution.Thank you!
1. Disproportionation occurs Fe(s) -- Fe2+ + 2e- 2(Fe3+ + 1e- -- Fe2+) -------------------------------- Fe(s) + 2Fe3+ -- 3Fe2+ 2. As ammonia solution is added to a solution of copper(II) ions, the Cu2+ reacts with OH- to make Cu(OH)2(s). Then the solid copper(II) hydroxide dissolves to form the dark blue-purple tetraamminecopper(II) ion. Cu2+ + 2OH- -- Cu(OH)2(s) Cu(OH)2(s) + 4NH3(aq) -- [Cu(NH3)4]2+ + 2OH-
As long as there is water in the pipe you will never melt it. NEVER. For fun, place a paper cup full of water in the fire. Sit it on the hottest coals and flames. Cup won't burn until the water is gone. (top of cup will burn down to the water line but then stop there.) If paper can take it, copper can. HOWEVER - Make sure your system has room for the water to expand (like the big tank that hangs off the pipes in your furnace and that the water is moving at all times so you don't boil it out.
It will work, but won't be very efficient. If you look at a gas water heater, you might see why your design won't work. Wood isn't very hot compared to gas or electric heating elements. Secondly, to get enough hot water, you'll have to mount something like a 20 gallon tank in the fireplace to store what you've heated. You won't have a melting problem. The water will keep everything below 212F. It's impossible to solder copper pipe with water in it and get a good, solid joint.
like I said Pisgichemist gave a great answer. but specifically to your point on email look at the half-cell potentials from an activity series Fe+3 + e- ------ Fe+2 +.77eV Fe+2 + 2e- ----- Fe -.44 eV since they are in this order in an activity series the Fe+3 on the left will react with the metal on the right below it to make the ion inbetween another way to look at it is to flip the second rnx and add then up (you dont double the eV when you multiply by two to balance e-) so 2Fe+3 + Fe --- 3 Fe+3 eV .77 +.44 1.21 eV since the eV is positive the rnx proceeds
According to pedia: has a melting point of 1984 degrees Fahrenheit. I have no idea if copper pipe uses any type of alloys that might lower its melting point. Something that certainly will melt at a lower temperature is the solder used in the joints which may or may not contain toxic lead. You could always get a small piece and throw it in there when the thing is lit and see what happens. Keep in mind that some alloyed metals give off chemicals as they heat up, potentially contaminating your water, which would be very bad if this hot water is used by humans. You're probably fine, but then again you might give yourself cancer in 20 years.
