Respuesta :

joseaaronlara

Answer:

The answer to your question is the letter B) 1.53 M

Explanation:

Data

Molarity = ?

volume = 225 ml

mass of KNO₃ = 34.8 g

molar mass = 101.1 g/mol

Process

1.- Convert the ml to liters

                  1000 ml ------------------ 1 l

                   225 ml ------------------- x

                   x = (225 x 1) / 1000

                   x = 0.225 l

2.- Convert the mass of KNO₃ to moles

                  101.1 g ---------------------- 1 mol

                   34.8 g --------------------- x

                        x = (34.8 x 1) / 101.1

                        x = 0.344 moles

3.- Calculate the Molarity

Molarity = moles/volume

-Substitution

Molarity = 0.344/ 0.225

-Result

Molarity = 1.53 M

CintiaSalazar

Considering the definition of molarity, the correct answer is option B: The molarity of the KNO₃ solution is 1.53 M.

Molar concentration is a measure of the concentration of a solute in a solution that indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution 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}{liters}[/tex].

In this case, you know:

  • number of moles of solute= [tex]34.8 gramsx\frac{1 mol}{101.1 grams}[/tex]= 0.3442 moles, being  101.1[tex]\frac{g}{mol}[/tex], the molar mass of the compound, that is, the amount of mass that a substance contains in one mole.
  • volume= 225 mL= 0.225 L (being 1000 mL= 1 L)

Replacing in the definition of molarity:

[tex]molarity=\frac{0.3442 moles}{0.225 L}[/tex]

Solving:

molarity= 1.53 M

Finally, the correct answer is option B: The molarity of the KNO₃ solution is 1.53 M.

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

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