Physics, 30.01.2020 12:04 GhostBoooty

Which of these solutions has the highest freezing point?

1.0 m molecular sucrose (c12h22o11)

1.0 m ionic sodium chloride (nacl)

1.0 m ionic calcium bromide (cabr2)

1.0 m ionic aluminum bromide (albr3)

1.0 m ionic potassium chloride (kcl)

Answers: 1

Show answers

Answers

Colligative properties depend on the amount of solute dissolved in a solvent. These set of properties do not depend on the type of species present. These properties include freezing point depression, boiling point elevation, osmotic pressure and vapor pressure lowering. The one that would have the highest freezing point would be the sucrose (FIRST OPTION) since its vant hoff factor is 1. Hope this answers the question.

Answer from: brendacauani12345

Option (a) is the correct answer.

Explanation:

Depression in freezing point depends on Vant Hoff factor. So, more is the number of dissociated ions lesser will be the freezing point.

Mathematically, $\Delta T_{f} = iK_{f}m$

where $\Delta T_{f}$ = freezing point depression

i = Vant Hoff factor

$K_{f}$ = freezing point depression

m = molality of the solution

The ratio between concentration of particles that are actually produced when a substance is dissolved and the concentration of a substance calculated from its mass is known as Vant Hoff factor.

Mathematically, i = $\frac{\text{total no. of moles of particles after association/dissociation}}{\text{No. of moles of particles before association/dissociation}}$

For dissociation i is greater than or equal to 1. 1 then dissociation has taken place. When i = 1 then neither association or dissociation has taken place.

Hence, sucrose will have i = 1 as it produces only one ion.

Sodium chloride will have i = 2 as it produces two ions.

Calcium bromide will have i = 3 as it produces three ions.

Aluminium bromide will have i = 4 as it produces four ions.

Potassium chloride will have i = 2 as it produces two ions.

Therefore, we can conclude that sucrose solution will have highest freezing point.

Answer from: Quest

he kicked it 10 feet straight up into the air? i think this works.

Answer from: Quest

it would be kevlar ^^

Other questions on the subject: Physics

Physics, 21.06.2019 17:20, buiratsamah

You have been called to testify as an expert witness in a trial involving a head-on collision. car a weighs 1515 lb and was traveling eastward. car b weighs 1125 lb and was traveling westward at 44.0 mph. the cars locked bumpers and slid eastward with their wheels locked for 22.5 ft before stopping. you have measured the coefficient of kinetic friction between the tires and the pavement to be 0.750 . how fast (in miles per hour) was car a traveling just before the collision? (this problem uses english units because they would be used in a u. s. legal proceeding.)

Answers: 3

continue

Physics, 21.06.2019 23:20, stormserena

The 5-kg cylinder is initially at rest when it is placed in contact with the wall b and the rotor at a. if the rotor always maintains a constant clockwise angular velocity v = 6 rad> s, determine the initial angular acceleration of the cylinder. the coefficient of kinetic friction at the contacting surfaces b and c is mk = 0.2.

Answers: 3

continue

Physics, 22.06.2019 01:30, ladyty2109

Kate is working on a project in her tech education class. she plans to assemble a fan motor. which form of energy does the motor convert most of its electric energy into? a. light energy b. motion energy c. sound energy d. thermal energy

Answers: 1

continue

Physics, 22.06.2019 11:30, 21ghostrider21

Which of these questions might a character ask if the conflict is man versus self? a. which path should i take to better myself? b. which boulder will be too heavy for me to carry? c. which friend is going to ditch me today? d. all of the above

Answers: 1

continue

You know the right answer?

Which of these solutions has the highest freezing point?

1.0 m molecular sucrose (c12h2...