Question

Which sample represents a homogeneous mixture?

1) C2H5OH(L)

2) C2H5OH(aq)

3) C2H5OH(g)

4) C2H5OH(s)

Answer 1

Answer: Option (2) is the correct answer.

Explanation:

A mixture is defined as the substance that contains two or more different number of substances that are physically mixed together.

For example, in an aqueous solution of ethanol there will be water and ethanol.

And as ethanol being an organic compound forms hydrogen bonding with water molecules due to which it dissolve in water and distributes evenly in water.

When a mixture in which solute particles are unevenly distributed into the solvent then it is known as a heterogeneous mixture.

For example, sand in water is a heterogeneous mixture.

A homogeneous mixture is defined as the mixture in which solute particles are evenly distributed in a solvent.

A homogeneous mixture is a clear solution.

For example, ethanol in water is a homogeneous mixture.

On the other hand, $C_{2}H_{5}OH(l)$, $C_{2}H_{5}OH(g)$ and $C_{2}H_{5}OH(s)$ are all different states of ethanol.

Thus, we can conclude that $C_{2}H_{5}OH(aq)$ sample represents a homogeneous mixture.

Answer 2

The correct answer to the question is Option 2. C₂H₅OH (aq)

A mixture is the combination of two or more substances that are not chemically combined together.

A mixture is termed homogeneous if the solute is evenly distributed in the solvent but if not, then it termed heterogeneous mixture.

Ethanol, C₂H₅OH in water is called aqueous solution of ethanol, C₂H₅OH (aq). This solution is a clear solution as the ethanol, C₂H₅OH is evenly distributed in the water.

Ethanol and water can be separated using physical means like distillation.

This further proves that C₂H₅OH (aq) is a mixture.

Unlike C₂H₅OH (l), C₂H₅OH (g) and C₂H₅OH (s). They are simply referred to as compound.

Therefore, the correct answer to the question is Option 2. C₂H₅OH (aq)

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