New answers tagged

0

Without getting into the chemistry which has been so clearly discussed by @MaxW, from my personal experience in "ebonizing woods" [particularly Oak and Black Walnut due to their tannin content] the light yellow solution you get as soon as the iron has dissolved, works the best. I am assuming that the red solution obtained after allowing the iron ...


1

Consider first the solvation of sodium metal in water to give a sodium ion and a hydrated electron. $$\ce{Na(s) \xrightarrow{\ce{H_2O}} Na^+(aq) + e^-(aq) }$$ The hydrated electron will then act as the reactive species to reduce water to hydrogen atoms and hydroxide anions. $$\ce{e^-(aq) + H_2O(l) \rightarrow H(aq) + OH^-(aq)}$$ Note that two of these ...


0

I have to say thank you to Maurice for his suggestion to use more concentrated HCl. I took the same pieces of floppy disk that I used before and increased the acid concentration by a factor of 10 and let them sit for another week. At first I was disappointed, because there was no visible change in the plastic or the solutions. But when I took the pieces out ...


Top 50 recent answers are included