Welcome to Westonci.ca, where finding answers to your questions is made simple by our community of experts. Ask your questions and receive accurate answers from professionals with extensive experience in various fields on our platform. Connect with a community of professionals ready to help you find accurate solutions to your questions quickly and efficiently.
Sagot :
Molality is the ratio of the moles of the solute and the mass of the solvent. The molality of the solute is 7.38 m.
What is molality?
Molality is the moles of the solute present in a kilogram of the solvent in a solution of the substance.
Given,
Percent by mass = 25.5 %
In 100 gm of solution = 25.5 gm of formic acid
Mass of solution = 100 gm
Mass of solute = 25.5 gm
Mass of solvent = 74.5 gm
Moles of solute are calculated as:
[tex]\dfrac{25.5}{46} = 0.55 \;\rm moles[/tex]
Moles of solvent are calculated as:
[tex]\dfrac{74.5}{18} = 4.13\;\rm moles[/tex]
Molality is calculated as:
[tex]\begin{aligned} \rm Molality &= \rm \dfrac{moles}{\text{mass in kg}}\\\\&= \dfrac{0.55}{0.0745}\\\\&= 7.38 \;\rm m\end{aligned}[/tex]
Therefore, 7.38 m is the molality of the solute.
Learn more about molality here:
https://brainly.com/question/14960567
#SPJ4
Your visit means a lot to us. Don't hesitate to return for more reliable answers to any questions you may have. We hope you found this helpful. Feel free to come back anytime for more accurate answers and updated information. We're glad you chose Westonci.ca. Revisit us for updated answers from our knowledgeable team.
