- #1
val1ant
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ionic/redox reactions need checking :)
Hi again, I had a number of questions that I am not quite sure about. I've asked peers, although they seem confused too.
1. When you have NaOH + Fe2O3. xH2O would the sodium displace the iron, from rust, to form NaO3+ H2O?
2. Oxidisation-reduction reaction for iron rusting. Heres what I got, although I am not too sure its correct:
4 Fe(s) + 6 H2O(l) + 3 O2(g) = 4 Fe3+(aq) + 12 OH-(aq)
Fe2+(aq) + 2OH-(aq) = Fe(OH)2(s)
Fe(OH)2(s) + O2(g) = Fe(OH)3(s)
Fe(OH)3(s) = (dehydrates) Fe2O3.xH2O(s) + H2O(l)
And again: iron reacting with citric acid
Fe¬(s) = Fe2+ (s) + 2e-
C6H8O7 (aq) = C6H6O72- (aq) + 2 H+(g)
Fe2+ (s) + C6H6O72- (aq) = FeC6H6O7 (s)
2e- + 2 H+ = H2 (g)
And: iron reacting with acetic acid
Fe(s) = Fe2+ (aq) + 2e-
2 CH3COOH(aq) = (CH3COO)2- (aq) + 2 H+(g)
Fe2+ (s) + (CH3COO)-2 (aq) = Fe (CH3COO)2 (s)
2e- + H+2 = H2
3. And: copper reacting with acetic acid
Cu(s) = Cu2+ (s) +2e-
2 CH3COOH(aq) = (CH3COO)2- (aq) + 2 H+(g)
Cu2+ (s) + (CH3COO)-2 (aq) = Cu (CH3COO)2 (s)
2e- + 2 H+ = H2 (g)
4. And copper reacting with citric acid:
Cu(s) = Cu2+ (s) +2e-
2 C6H8O7 (aq) = (C6H5O7)2-(aq) + 6 H+(g)
3 Cu2+ (s) + 2 (C6H5O7)2-(aq) = Cu3(C6H5O7)2 (s)
2e- + 2 H+ = H2 (g)
5. and if i added salt crystals to water, and put an iron nail in it, would the salt draw away the ions from the iron in the water? (thus slowing down the corrosion of iron)
Sorry for all the trouble!
Hi again, I had a number of questions that I am not quite sure about. I've asked peers, although they seem confused too.
1. When you have NaOH + Fe2O3. xH2O would the sodium displace the iron, from rust, to form NaO3+ H2O?
2. Oxidisation-reduction reaction for iron rusting. Heres what I got, although I am not too sure its correct:
4 Fe(s) + 6 H2O(l) + 3 O2(g) = 4 Fe3+(aq) + 12 OH-(aq)
Fe2+(aq) + 2OH-(aq) = Fe(OH)2(s)
Fe(OH)2(s) + O2(g) = Fe(OH)3(s)
Fe(OH)3(s) = (dehydrates) Fe2O3.xH2O(s) + H2O(l)
And again: iron reacting with citric acid
Fe¬(s) = Fe2+ (s) + 2e-
C6H8O7 (aq) = C6H6O72- (aq) + 2 H+(g)
Fe2+ (s) + C6H6O72- (aq) = FeC6H6O7 (s)
2e- + 2 H+ = H2 (g)
And: iron reacting with acetic acid
Fe(s) = Fe2+ (aq) + 2e-
2 CH3COOH(aq) = (CH3COO)2- (aq) + 2 H+(g)
Fe2+ (s) + (CH3COO)-2 (aq) = Fe (CH3COO)2 (s)
2e- + H+2 = H2
3. And: copper reacting with acetic acid
Cu(s) = Cu2+ (s) +2e-
2 CH3COOH(aq) = (CH3COO)2- (aq) + 2 H+(g)
Cu2+ (s) + (CH3COO)-2 (aq) = Cu (CH3COO)2 (s)
2e- + 2 H+ = H2 (g)
4. And copper reacting with citric acid:
Cu(s) = Cu2+ (s) +2e-
2 C6H8O7 (aq) = (C6H5O7)2-(aq) + 6 H+(g)
3 Cu2+ (s) + 2 (C6H5O7)2-(aq) = Cu3(C6H5O7)2 (s)
2e- + 2 H+ = H2 (g)
5. and if i added salt crystals to water, and put an iron nail in it, would the salt draw away the ions from the iron in the water? (thus slowing down the corrosion of iron)
Sorry for all the trouble!
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