Explanation

Barium is an alkaline earth metal, which is a group of elements in the periodic table that includes:

• Magnesium (Mg)
• Calcium (Ca)
• Strontium (Sr)
• Barium (Ba)
• Radium (Ra)

These elements are in group 2 (formerly group IIA) of the periodic table.

Explanation

In an electrochemical cell, reduction occurs at the cathode (positive electrode), where electrons are gained by the oxidized species, causing it to be reduced.

Meanwhile, oxidation occurs at the anode (negative electrode), where electrons are lost by the reduced species, causing it to be oxidized.

Explanation

The equivalent weight of an element is the mass of the element that reacts with one mole of electrons (or one mole of hydrogen atoms).

For aluminum (Al), the equivalent weight is 9 g.

Atomic weight of Al = 27 g/mol

Valency of Al = 3 (since Al forms Al3+ ions)

Equivalent weight = Atomic weight / Valency

= 27 g/mol / 3

= 9 g

So, 1 g equivalent weight of Al is 9 g!

Explanation

In a Daniell cell, the following is used as a cathode:

• Copper (Cu): The copper electrode is reduced and gains electrons to form copper atoms.
• The half-reaction is: Cu2+(aq) + 2e- → Cu(s)

Explanation

Acetic acid (CH3COOH) is a weak acid that only partially dissociates in water, forming a weak electrolyte solution.

It does not fully dissociate into ions like strong acids (like HCl) or strong bases (like KOH).

Explanation

Aluminum (Al) is a metal that can easily lose electrons to form ions, making it a reducing agent.

As a reducing agent, aluminum can donate electrons to other substances, causing them to be reduced.

Explanation

Chlorine (Cl2) is a strong oxidizing agent, which means it can accept electrons from other substances and cause them to be oxidized.

Chlorine is a powerful oxidizer and is often used as a disinfectant or bleach.

Explanation

Urea is a non-electrolyte, meaning it does not dissociate into ions in aqueous solution.

It does not conduct electricity.

Explanation

One Faraday (F) is equal to 96,500 Coulombs (C).

The Faraday is a unit of electric charge.

It represents the amount of charge required to deposit one mole of electrons (6.022 x 10^23 electrons) at an electrode.

Explanation

Steel is an alloy of iron (Fe) and carbon (C), with small amounts of other elements like manganese, chromium, and vanadium.

It's a mixture of two or more elements, where at least one is a metal, making it an alloy.