Explanation

Chlorine can be displaced by fluorine (F).

This is because fluorine is more reactive than chlorine.

As halogen reactivity decreases down the group in the periodic table.

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

The molar mass of sodium chloride (NaCl) is 58.44 g/mol.

To find the mass of 2 moles of NaCl, you can multiply the molar mass by 2: 2 mol × 58.44 g/mol = 116.88 g

Rounded to the nearest gram, this is approximately 117 grams.

Explanation

 A solution that has a relatively less amount of solute in comparison to the solvent is called a dilute solution.

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ND20-1-2023

Explanation

The –SH group is present in thiols. 

A thiol is a functional group where a sulfur atom is bonded to a hydrogen atom.

The -SH group is analogous to the -OH group in alcohols, except that sulfur replaces oxygen. 

Explanation

A gas behaves non-ideally at low temperature and high pressure. 

At low temperatures, molecules have less kinetic energy,

Meaning they move more slowly and are more likely to experience intermolecular forces, which causes them to deviate from ideal behavior. High pressure also contributes to non-ideal behavior because the molecules are closer together, leading to increased interactions. 

Explanation

Alpha particles consist of 2 protons and 2 neutrons, making them identical to the nucleus of a helium atom (He²⁺).

They carry a +2 charge.

They are emitted during alpha decay in radioactive elements.

Explanation

Qc (reaction quotient) is defined as the ratio of the molar concentrations of products to reactants, each raised to the power of their respective stoichiometric coefficients (coefficients in the balanced chemical equation).

Explanation

The charges of Proton, Electron, Neutron respectively are:

• Proton: Positive charge (+1)
• Electron: Negative charge (-1)
• Neutron: Neutral charge (0)

Explanation

Sodium chloride (NaCl) forms ionic bonds, which are considered the strongest type of bonding in solids.

These bonds involve a strong electrostatic attraction between positively charged sodium ions (Na+) and negatively charged chlorine ions (Cl-).

This results in a stable crystal lattice structure, requiring a significant amount of energy to overcome and melt the compound.