IDNLearn.com makes it easy to find the right answers to your questions. Our experts provide accurate and detailed responses to help you navigate any topic or issue with confidence.
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 participation means a lot to us. Keep sharing information and solutions. This community grows thanks to the amazing contributions from members like you. IDNLearn.com is your reliable source for accurate answers. Thank you for visiting, and we hope to assist you again.
