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dezoksy [38]
1 year ago
11

which solute would you expect to most lower the freezing point of water? which solute would you expect to most lower the freezin

g point of water? all solutes lower the freezing point equally cacl2 sugar nacl
Chemistry
1 answer:
Orlov [11]1 year ago
7 0

CaCl_{2} is the substance that one would anticipate lowering water's freezing point the most.

This makes use of the freezing point depression theory. When dealing with this problem, we employ the equation shown below:

T = iKfm, which is rendered as follows in English:

Vant Hoff factor times molal freezing point depression constant * Solution molality equals the change in freezing point.

The quantity of molecules, not their composition, determines the freezing point depression because it is a colligative feature.

Now that we are certain that Kf and molality will remain constant, the Van't Hoff factor, also known as "i" is our sole remaining unknown.

The number of atoms that separate from each particular molecule is known as the Van't Hoff factor. The freezing point will be more depressed the greater the Van't Hoff factor.

NaCl will dissociate into Na+ and Cl-, therefore it has I = 2 CaCl2 will dissociate into Ca2+ and 2 Cl-, so it has I = 3. Sugar (C12H22O11) has I = 1.

Choice B is the appropriate response as a result.

To learn more about freezing point, refer:-

brainly.com/question/13380426

#SPJ4

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Likurg_2 [28]

HI.

Hope this helps!

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3 0
3 years ago
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For the equilibrium PCl5(g) PCl3(g) + Cl2(g), Kc = 2.0 × 101 at 240°C. If pure PCl5 is placed in a 1.00-L container and allowed
Cloud [144]

Answer:

the equilibrium concentration of [PCl₅] is 3.64*10⁻³ M

Explanation:

for the reaction

PCl₅(g) → PCl₃(g) + Cl₂(g)

where

Kc= [PCl₃]*[Cl₂]/[PCl₅] = 2.0*10¹ M = 20 M

and [A] denote concentrations of A

if initially the mixture is pure PCl₅ , then it will dissociate according to the reaction and since always one mole of PCl₃(g) is generated with one mole of Cl₂(g) , the total number of moles of both at the end is the same → they have the same concentration → [PCl₃(g)] = [Cl₂]=0.27 M

therefore

Kc= [PCl₃]*[Cl₂]/[PCl₅] = 0.27 M* 0.27 M /[PCl₅] = 20 M

[PCl₅]  =  0.27 M* 0.27 M / 20 M = 3.64*10⁻³ M

[PCl₅]  = 3.64*10⁻³ M

the equilibrium concentration of [PCl₅] is 3.64*10⁻³ M

6 0
3 years ago
Which of the following is a measure of velocity?
padilas [110]

The correct answer is 30 seconds

6 0
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The formula for the table salt is NaCl. Is table salt ionic or covalent? Explain.
mel-nik [20]

Answer:

ionic

it is a mixture of a nonmetal and a metal which is what makes ionic compounds

covalent is a nonmetal and nonmetal

Explanation:

6 0
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A solution contains 45 grams of nitrogen gas and 40 grams of argon. What is the mole fraction of argon in this solution?
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 <span>0.38 

You first calculate the total moles by dividing the grams by molecular weight: 
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Then you divide the moles of Ar by the total number of moles: 
1.0 / (1.6 + 1.0) = 0.38 mol fraction</span>
8 0
4 years ago
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