Questions tagged [redox]

Redox is the portmanteau of reduction and oxidation. This tag should be used in questions where both the reduction and the oxidation process are under focus. This tag is not limited to inorganic chemistry. If the question is specifically about either reduction or oxidation (not both) of an organic compound, use [organic-reduction] or [organic-oxidation] instead.

1,280 questions
Filter by
Sorted by
Tagged with
9 views

Effect of side reactions on galvanic cell using iron rod as anode and sodium chloride as salt bridge

We just made a galvanic cell on a chemistry lesson using iron and copper. We used a sponge soaked in $\ce{NaCl}$ solution as the salt bridge. The issue is that we measured a voltage way below the ...
20 views

Titration procedure for measuring the antioxidant properties of EGCG

I am conducting a school-based research project into the antioxidative properties of green tea. Part of the procedure is to determine the concentration of antioxidant in green tea. This antioxidant is ...
25 views

What product is created in a zinc - nitrate reaction?

Question: Place 2 mL of Nitric acid in a test tube and add a small piece of Zinc turning I thought that the overall net ionic equation would be: $$\ce{Zn + 2H+ -> Zn^2+ + H2}$$ Is this correct? ...
14 views

combination of H2 and O2 after electrolysis [closed]

if we electrolysis water in a closed container H2 and O2 is formed, now as the container is closed both gases remain there when the electrolysis stop and water cool down will h2 and o2 remain in the ...
30 views

61 views

76 views

55 views

Isn't oxidation number a weird concept? It assumes complete transfer of an electron from a more EN to a less EN atom per covalent bond formed. This assumption isn't even true. We know that partial δ^+... 0answers 22 views At what concentration would copper sulphate crystallise at 25 degrees Celsius? I am doing an experiment on how increasing concentration of copper sulphate affects the voltage in a galvanic cell. The voltage increased as temperature did until 2M where it started to decrease. I ... 0answers 24 views Vanadium redox battery… why not nitrogen redox battery OR iron redox battery? Vanadium redox battery operating on \begin{align} \ce{V^2+ -> V^3+ +e-}\\ \ce{VO2^+ +e- +2H^+ -> VO^2+ +H2O} \end{align} because Vanadium has multiple oxidation states. How about nitrogen ... 1answer 28 views Reasoning for redox reactions to be classified as such Could anyone help me out solving this question regarding redox reactions? I am fairly new to this topic. Which of the following is a redox reaction? (1)\ce{NaCl + KNO3 -> NaNO3 + KCl}$(2)$\ce{...
39 views

$$\ce{KCl + KMnO4 + H2SO4 -> K2SO4 + MnSO4 + H2O + Cl2}$$ Attempt. I want to adjust this redox reaction, I've figured out that Chlorine and Manganese are the 2 elements that change thier oxidation ...
26 views

How does the solvation of Zn lead to oxidation? (galvanic cell)

This video explains a causality of electric potential difference in a galvanic cell that's different from what I've understood. The video says that the $\ce{Zn}$ is dissolved into the water, and ...
80 views

Does 50% hydrogen peroxide dissolve gold?

We have seen that the silver electrodes on a piezo element are being seemingly dissolved by exposure to our mixture of $50\,\%$ hydrogen peroxide. I was wondering if we were to switch to gold ...
33 views

Copper plating with electrolyte not working (Cu(OH)2 vs CuSO4)

I've been experimenting using electroplating, and I recently made a solution by placing two copper pieces connected to a voltage source, in water. I suspect that this created copper(II) hydroxide, as ...
48 views

How do I write a balanced redox reaction for the oxidation of chalcocite [(Cu2S) (s)] by O2 (g) to form Cu2+ (aq) and SO42- (aq) [closed]

I'm not exactly sure how to get the oxidation and reduction half reactions. Any help will be much appreciated!
18 views

Can you calculate the oxidation potential of an ion?

Is there any way to calculate the oxidation potential of [Fe(OH)(H2O)5]+? I am unsure if it can be done since I have only seen oxidation potentials provided for specific reactions of single elements, ...
64 views

How do acids prevent ferrous sulfate from getting oxidised?

If $\ce{FeSO4.7H2O}$ is dissolved in an acidic environment, for example in 0.05 M aqueous solutions of methanoic or ethanoic acid, would that prevent it from getting oxidized if an oxidizing agent ...
62 views

Balancing redox reactions

This has gotten me confused since long. Not all equations have clean half- reactions, some cations are in more than one compound while some anions are in some other compounds. Some reactions don't ...
56 views

Question regarding the colour of Benzoic acid and Benzyl alchohol

This question is primarily based on the Cannizzaro reaction, where a base induces a disproportionation reaction of non-enolizable aldehydes (benzaldehyde, formaldehyde, etc) to form an alcohol and a ...