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soldier1979 [14.2K]
2 years ago
6

When a certain amount of MgF2 is added to water, the freezing point lowers by 3.5° C. What was the molality of the

Chemistry
1 answer:
Leni [432]2 years ago
6 0

The molality of the solution is obtained as 0.63 m.

<h3>What is the freezing point?</h3>

The freezing point is the temperature at which the liquid is converted into solid.

We know that;

ΔT = 3.5° C

K = 1.86° C/m

i = 3

m = ?

Thus;

ΔT = K m i

m = ΔT/K i

m = 3.5° C/ 1.86° C/m * 3

m = 0.63 m

Learn more about freezing point:brainly.com/question/3121416

#SPJ1

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Explanation:

Given -

  • An organic compound gives H₂ gas with Na
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Now,

Let A be the organic compound.

Then,

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Now,

Here we see that compound A reacts with chromic oxide (CrO₃) in the presence of acidic medium gives aldehyde.

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And It forms only 2 Carbon aldehyde it means, It is Ethanal (CH₃CHO).

Compound A reacts with chromic oxide (CrO₃) in the presence of acidic medium gives ethanal.

It means,

We know that 1° alcohol on oxidation gives aldehyde.

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It means,

Here 2 Carbon and 1° alcohol is used.

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Its cleared that Compound A is Ethanol.

Reaction Involved -

  1. CH₃CH₂OH + Na → CH₃CH₂O⁻Na⁺ + H₂↑
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