QUESTION 3

Choose the aqueous solution that has the highest boiling point. These are all solutions of nonvolatile solutes and you should as

FrozenT [24]

Answer:

0.100 M AlCl₃

Explanation:

The variation of boiling point by the addition of a nonvolatile solute is called ebullioscopy, and the temperature variation is calculated by:

ΔT = W.i

Where W = nsolute/msolvent, and i is the Van't Hoff factor. Because all the substances have the same molarity, n is equal for all of them.

i = final particles/initial particles

C₆H₁₂O₆ don't dissociate, so final particles = initial particles => i = 1;

AlCl₃ dissociates at Al⁺³ and 3Cl⁻, so has 4 final particles and 1 initial particle, i = 4/1 = 4;

NaCl dissociates at Na⁺ and Cl⁻ so has 2 final particles and 1 initial particle, i = 2/1 = 2;

MgCl₂ dissociates at Mg⁺² and 2Cl⁻, so has 3 final particles and 1 initial particle, i = 3/1 = 3.

So, the solution with AlCl₃ will have the highest ΔT, and because of that the highest boiling point.

8 0

4 years ago

Draw the structures of organic compounds a and b omit all by products thf

Brums [2.3K]

The reaction is shown below,

Step 1: Hydration of Alkene:
In first step Ethene is hydrated to Ethanol through Hydroboration Reaction.

Step 2: Oxidation of Primary Alcohol:
In this step partial oxidation of ethanol is carried out using mild Oxidizing agent Pyridinium chlorochromate (PCC) and Acetaldehyde is produced.

Step 3: Reduction of Acetaldehyde followed by Oxidation:
In this step, first acetaldehyde is reduced to secondary alcohol using grignard reagent. After that the sec. alcohol is oxidized to ketone by using oxidizing agent CrO₃.

6 0

4 years ago

The equation for density, d, is

Zanzabum

Mass (g) / Volume (cm^3) = Density (g/cm^3)

60.4g/ 11.3 cm^3 = 5.35 g/cm^3

d= 5.35 g/cm^3

7 0

3 years ago

Aqueous solutions of silver nitrate (AgNO3) and iron(III) chloride (FeCl3) are mixed together. Which ion combines with the chlor

garik1379 [7]

Hello there!

The correct answer is Ag⁺.

If we look at the solubility rules, it says that most chlorides are soluble, except with Ag⁺, and Pb²⁺.

I hope this helps!
Brady

6 0

3 years ago

Read 2 more answers

Discuss electrochemical principle about rusting of iron

Levart [38]

Answer:

The electrochemical phenomenon of rusting of iron can be described as : At Anode: Fe (s) undergoes oxidation to releases electrons. Electrons released at anode move to another metal and reduce oxygen in presence of H+. It is available from H2CO3 formed from the dissolution of CO2 from air into water.

7 0

3 years ago