Chriselc03idn
Answered

Makakuha ng mga sagot sa iyong mga tanong mula sa komunidad ng IDNStudy.com. Makakuha ng hakbang-hakbang na mga gabay para sa lahat ng iyong teknikal na tanong mula sa mga miyembro ng aming komunidad na may kaalaman.

What is the Freezing Point of a solution that contains 1.25 mol of CaCl2 ( Cl = 35.5 ) in 1400 g of water?

a. -5 deg. celsius
b. 5 deg. celsius
c. 105.5 deg. celsius

Sagot :

Indrawboyidn

The freezing Point of a solution : -1.661 °C(no option)

Further explanation  

Solution properties are the properties of a solution that don't depend on the type of solute but only on the concentration of the solute.  

The term is used in the Solution properties  

1. molal  

that is, the number of moles of solute in 1 kg of solvent  

[tex]\tt m=\dfrac{mol~solute}{mass~1~kg~solvent}[/tex]

2. freezing point  

Solutions from volatile substances have a higher boiling point and lower freezing points than the solvent  

[tex]\tt \Delta Tf=Kf\times m[/tex]

ΔTf = Tf solvent - Tf solution

Kf = The molal freezing point depression constant

m = molal solution  

Given

1.25 mol CaCl₂

1400 g water = 1.4 kg

Required

The freezing point

Solution

molal of the solution :

= mol : kg solvent(water)

= 1.25 mol : 1.4 kg

= 0.893

The freezing point :

Tf solvent = 0 °C(for water)

Kf water = 1.86 °C/m

Input the value :

ΔTf = Tf solvent - Tf solution  = Kf . m

0 - Tf solution = 1.86 °C/m . 0.893

0 - Tf solution = 1.661

Tf solution = - 1.661 °C

Learn more  

the vapor pressure of the glucose solution  

https://brainly.ph/question/2746258  

The molecular mass of organic compound  

https://brainly.ph/question/2741540  

The molecular weight of nonvolatile nonelectrolyte substance  

https://brainly.ph/question/2740419  

#LetsStudy  

Ang iyong presensya ay mahalaga sa amin. Magpatuloy sa pagtatanong at pagbabahagi ng iyong nalalaman. Ang iyong ambag ay napakahalaga sa aming komunidad. May mga katanungan ka? Ang IDNStudy.com ang may sagot. Salamat sa iyong pagbisita at sa muling pagkikita.