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18 related questions found

Are sulfates and sulfates the same thing?

spell. « Sulfate » is the spelling recommended by IUPAC, but « sulphate » is traditionally used in British English.

Is sulfate an acid or a base?

Sulfate ions are very weak foundation, while HSO-4 is a rather strong acid with Ka=0.01. On the other hand, H2SO4 is a very strong acid. Because it is a weak base, the hydrolysis of sulfate ions in aqueous solution is negligible.

Why is hydrogen gas emitted at the cathode?

Hydrogen is produced at the cathode If metals are more reactive than hydrogen.

What happens to Oh in electrolysis?

Electrolysis of acidified water

H+ ions are attracted to the cathode, gain electrons and form hydrogen gas. OH – ion attracted by the anode loses electrons and forms oxygen.

What happens to sulfate ions in electrolysis?

– Electrolysis is the process that the electrolyte (in this case copper sulfate solution) undergoes The redox reaction on the electrode due to the action of the current. – At the cathode, reduction occurs. …Since this reduction reaction occurs at the cathode, the copper electrode is the cathode.

Can chlorine show the +3 oxidation state?

must have chlorine +3 oxidation state. But if you look at the periodic table chlorine is in period 7, which means it has 7 valence electrons, so it gains one electron when it reacts. By definition, being oxidized means losing electrons, so an oxidation state of +3 means chlorine loses 3 electrons.

What is the oxidation state of sulfur in scl2?

Answer: The sum of the oxidation numbers of compounds is 0.

Which reducing agent is the strongest?

Due to the minimum standard reduction potential, lithium is the strongest reducing agent. When something is oxidized, it reduces another substance, becoming a reducing agent. Therefore, lithium is the most powerful reducing agent.

What form of sulfur is most easily oxidized?

The most oxidized form of biologically active sulfur is The ubiquitous dianion, sulfate (SO42−), strong inorganic acid sulfuric acid (H2SO4). The most reduced form is H2S, hydrogen sulfide, a gas under physiological conditions, ejected by volcanoes above and below the ocean surface.

What color is sulfur oxide?

chemical properties

burning sulfur blue flame Produces sulfur dioxide, which has a suffocating and pungent odor. Sulfur is insoluble in water, but soluble in carbon disulfide and to a lesser extent in other non-polar organic solvents such as benzene and toluene.

Which ions are oxidized during electrolysis?

Positively charged ions move to the negative electrode during electrolysis. They receive electrons and are reduced. negatively charged ions It moves towards the positive electrode during electrolysis. They lose electrons and get oxidized.

What is the strongest reducing agent in the electrochemical series?

At the top of the electrochemical series there are lithium It is the strongest reducing agent, with fluorine at the bottom of the electrochemical series, it is the weakest reducing agent or the strongest oxidizing agent.

Why is hydrogen formed at the cathode instead of sodium?

You might expect sodium metal to deposit on the negative electrode. However, Sodium is too reactive for this to happen, so hydrogen gas is given off. The hydrogen ion H+(aq) (from water) is released at the negative electrode as hydrogen gas H2(g)

Why not use zinc electrodes?

Electrolysis is similar to copper(II) sulfate solution with inert electrodes. The key to the answer is that zinc forms at the cathode. However, Zinc is more reactive than hydrogenso logically hydrogen should be released at the cathode, not zinc.

On which electrode does the oxidation take place?

Oxidation occurs in positive electrode Because this is where the negative ions lose their electrons.

Why is the positive electrode getting smaller?

Molten aluminum sinks to the bottom of the battery, where it is tapped.This oxygen reacts with the carbon of the positive electrode to form carbon dioxide, so they gradually burn off. As a result, the positive electrode must be replaced frequently.

Is HNO3 a base or an acid?

HNO3 is a strong acid, a base, and sometimes nitrating agents and heavy oxidizing agents. In the presence of stronger acids, it acts as a base. Nitric acid is a stronger acid than nitric acid because the conjugate base is more stable.

Why do sulfates have 2 charges?

Sulfate is a polyatomic ion with 1 sulfur (6 valence electrons), 4 oxygens (4 x 6 valence electrons = 24 e-) and a charge of -2 (2 valence electrons). If we add all the electrons together, we get 32 ​​valence electrons, which can form bonds and lone pairs around the atoms in the ion.