A sweetened ice tea beverage of 355mL contains 43.0 g of sucrose (sugar). Calculate the molarity of sucrose in the drink.
Sucrose: C12H22O11
Molar mass kf sucrose= 342.3 g/mol

Respuesta :

Hey there!:

Molar mass sucrose = 342.3 g/mol

Number of moles:

n = m / mm

n = 43.0 / 342.3 => 0.1256 moles of sucrose

Volume in liters of solution:

355 mL / 1000 => 0.355 L

Therefore:

M = n / V

M = 0.1256 / 0.355

= 0.353 M

Hope that helps!

Taking into account the definition of molarity, the molarity of sucrose in the drink is 0.355[tex]\frac{moles}{liter}[/tex].

Molarity is a measure of the concentration of a compound or substance that is defined as the amount of a substance in a certain volume of solution.

In other words, Molarity is the number of moles of solute that are dissolved in a given volume.

Molarity is calculated by dividing the moles of the solute by the volume of the solution:

[tex]Molarity=\frac{number of moles of solute}{volume}[/tex]

Molarity is expressed in units [tex]\frac{moles}{liter}[/tex].

On the other hand, molar mass is the amount of mass that a substance contains in one mole. In this case the molar mass of sucrose is 342.3 g/mol. So, the number of moles that contain 43 g of sucrose can be calculated as:

[tex]43 gramsx\frac{1 mole}{342.3 grams} =[/tex] 0.126 moles

Then, you know:

  • number of moles of solute= 0.126 moles
  • volume=355 mL= 0.355 L (being 1000 mL= 1 L)

Replacing in the definition of molarity:

[tex]Molarity=\frac{0.126 moles}{0.355 mL}[/tex]

Solving:

Molarity= 0.355[tex]\frac{moles}{liter}[/tex]

Finally, the molarity of sucrose in the drink is 0.355[tex]\frac{moles}{liter}[/tex].

Learn more about molarity with this example: brainly.com/question/15406534?referrer=searchResults