chemistry

A common ion is an ion that enters the atmosphere from three different sources.

• True

• False

• Medyo

Buffers are solutions of a weak conjugate acid-base pair.

• Hindi ko alam

• True

• False

The extent of ionization of a weak electrolyte is decreased by adding to the solution a strong electrolyte that has an ion in common with the weak electrolyte.

• Di ka manahimik

• True

• Syempre false

When the solution is heated, more solute will dissolve in the solvent.

• Theory of relativity

• Size of solute

• Temperature

Gasoline does not dissolve in water, does decreasing the solubility of gasoline

• Temperature

• Nature of solute

• Amount of solvent

When 2 tablespoon of sugar are added to 200ml of water, more sugar particles are dissolved as compared when the same amount of sugar is dissolved in 50ml of water.

• False

• True

• Amount of solvent

• Manner of stirring

Explain the process of oxidation and provide real-life examples of how it occurs in everyday materials or substances.

Answer explanation

The loss of electrons or the addition of oxygen are both involved in oxidation reactions. Many processes in our daily lives, such as respiration, combustion, and photosynthesis in plants, involve oxidation. Fats and oils oxidise and become rancid as a result of this process.

Generally 1.Blank is considered 2.Blank if more than 1 gram dissolves in 100 ml of water.

The amount dissolving equals the amount coming back

Explain how a galvanic cell generates electricity, including the role of the two half-cells and the flow of electrons.

Answer explanation

To harness this energy, the reaction must be split into two separate half reactions: the oxidation and reduction reactions. The reactions are put into two different containers and a wire is used to drive the electrons from one side to the other. In doing so, a Voltaic/ Galvanic Cell is created.