Question

A solution of sucrose is 34.2%. The volume of solution containing 1 mole of solute

Answer 1

Concept:

Sucrose's crystal structure is monoclinic. 2 This compound decomposes at high temperatures (above 186 °C), yielding caramel.

Given:

A solution of sucrose is 34.2%.

Find:

The volume of solution containing 1 mole of solute?

Solution:

We know from the given data that in 100 mL of a solution, there is 34.2 grams of solute is dissolved.

So, for a mole of sucrose, the molar mass of sucrose = 342 g/mol

Multiply both sides by 10 and we get,

100 mL x 10 = 34.2 g x 10

1000 mL = 342 g

Thus, the volume of solution required for the 1 mole of solute is 1000 mL.

Hence, the volume of solution containing 1 mole of solute is 1000 mL.

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Answer 2

Concept:

A mole is defined as the amount of a substance that contains exactly the Avogadro number of 'elementary entities' of the given substance.

According to the mole concept, the number of moles can be calculated by dividing the given mass of species by its molar mass.

Given:

34.2% sucrose solution = 34.2 gm of sucrose present in 100 ml solution.

The molar mass of sucrose= 342 gm (approx)

Find:

The volume of solution contains 1 mole of sucrose.

Solution:

Mass of sucrose in 100 ml solution= 34.2 g

Number of moles of sucrose in 100 ml solution = mass given/ molar mass

= 34.2/342

So, 0.1 mole of sucrose is present in 100 ml solution.

Applying the unitary method,

1-mole sucrose is present in (100/0.1)

Hence, 1mole sucrose is present in a 1000 ml solution.

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