Chemistry Forum

OK, I've got it. It makes sense as long as you put a good layer of iron over the copper tip. You can easily test right polarity by immersing both electrodes made of copper wire into iron (II) salt solution. You will see one electrode turning black or grey - that's the right one. The problem is that ...

I can't help you without knowing what metal or alloy you are trying to renew. From the chemicals you are recalling you can make a mixture of silver nitrate in ammonia. When another solution, glucose or formalin added to this solution, it will form a "silver mirror" that will precipitate on...

Wrong reaction. Don't even try it!

This would happened at high temperature upon contact with hot coal. t can happen in a firelpace, if inappropriately fueled with coal or evem wood with not enough air. This happens during elimination of carbon from casted iron turning it into higher grade steel.

I hope you've learned already. Balance carbon first, then hydrogen, finally check by oxygen

No replacement, just catalysis by MnO2:
2H2O2 --> 2H2O + O2

I was curious about this too. Make sure we share the bonus. I've done some Googling and found that berlinite (AlPO4) has interesting physical properties that can be used in acustic electronic devices like frequency generators and Radars. Here is US patent US4609843 http://www.freepatentsonline.com/4...

Forgot to mention that Coke also contains phosphoric acid (read label). Phosphoric acid is excellent agent for cleaning rust. Transfer rusty nail into the Coke jar and see if it gets cleaned.

It’s intriguing that RS water and tap water demonstrated significant difference in rusting. Normally rusting would be caused by water and oxygen, but salts accelerate the process. Properly functioning RO system should have lower salt concentration than tap water. I have one possible explanation. RO ...

Why do you need to plate copper with iron? Doesn't make much sense to me. Use FeSO4 if you really need to. If not available, make by dissolving a nail in HCl (FeCl2 will do to) or diluted 20% H2SO4. Remove the wire quickly after plating and wash with water. Otherwise the iron layer will quickly diss...

TRy brief treatment with 20% nitric acid. You can also try hydrogen peroxide (3%) with other strong diluted acids (H2SO4 ro HCl). Be careful - very aggressive mixtures, do not expose your metals for a long time since they maybe etched by these mixtures.

and end up with K2SO4 and try again

WRITE BALANCED CHEM. EQUA. FOR THE REACTANTS. gaseous hydrogen chloride reacts with gaseous ammonia to produce solid ammonium chloride. Very simple -do it yourself solid copper (II) sulfide reacts with aqueous nitric acid to produce aqueous copper (II) sulfate, liguid water, and nitrogen dioxide gas...

Na2So3 + HCl + HNO3 + BaCl2 = ?
Actually Na2SO3 and HCl do react. THe result is NaCl, SO2 and H2O
In the presence of HNO3 SO2 turns into H2SO4
BaCl2 reacts with H2SO4 producing very insoluble BaSO4. THis is assuming HNO3 is diluted. Conc HNO3 may oxidize BaCl2 into Cl2

MgCrO4 + Fe(ClO3)3 → no reaction (both are oxidizers) unless heated. In that case the second component will degrade to FeCl3+O2
MgBr2 + (NH4)2CO3 → Mg(OH)2+ NH4Br+CO2