All categories

4 years ago

1) AgI has a Ksp of 8.3 × 10-17, ZnS has a Ksp of 1.6 × 10-24, PbS has a Ksp of 8.3 × 10-28, and CaSO4 has a Ksp of 9.6 × 10-6.

1 answer:

4 0

For the first question, I think the correct answer would be D. Calcium sulfate would be the most soluble salt in the given choices. The solubility product constant or Ksp expresses the equilibrium of the a solid and the ions it dissociates when in solution. Such that a higher value of Ksp would mean the compound is more soluble in solution. For the second question, the answer would be the first option. Given the amounts of the reactants and the Ksp of AgBr, the product silver bromide would precipitate in the product solution. This is because the resulting concentration of this product is way higher than the solubility of the compound.

You might be interested in

Why are little pieces of cardboard lighter than a whole piece of cardboard?

Ilia_Sergeevich [38]

I use small cardboard boxes for organizing drawers, etc,---also break them down and use it in the garden to kill weeds, and I add some to my compost. ... side to one edge that's somewhat shorter than the magazine, to enable one to remove one magazine without removing the whole box from the shelf.

7 0

3 years ago

Read 2 more answers

What are the boiling points and freezing points (in oC) of a solution of 50.3 g of I2 in 350 g of chloroform? The kb = 3.63 oC/m

patriot [66]

Answer:

Boiling point: 63.3°C

Freezing point: -66.2°C.

Explanation:

The boiling point of a solution increases regard to boiling point of the pure solvent. In the same way, freezing point decreases regard to pure solvent. The equations are:

Boiling point increasing:

ΔT = kb*m*i

Freezing point depression:

ΔT = kf*m*i

ΔT are the °C that change boiling or freezing point.

m is molality of the solution (moles / kg)

And i is Van't Hoff factor (1 for I₂ in chloroform)

Molality of 50.3g of I₂ in 350g of chloroform is:

50.3g * (1mol / 253.8g) = 0.198 moles in 350g = 0.350kg:

0.198 moles / 0.350kg = 0.566m

Replacing:

Boiling point:

ΔT = kb*m*i

ΔT = 3.63°C/m*0.566m*1

ΔT = 2.1°C

As boiling point of pure substance is 61.2°C, boiling point of the solution is:

61.2°C + 2.1°C = 63.3°C

Freezing point:

ΔT = kf*m*i

ΔT = 4.70°C/m*0.566m*1

ΔT = 2.7°C

As freezing point is -63.5°C, the freezing point of the solution is:

-63.5°C - 2.7°C = -66.2°C

7 0

3 years ago

A gas has a volume of 1.22L at 179K. Once heated, the same gas now has a volume of 6.1L at 285K and 1.34atm. What was the origin

sergiy2304 [10]

Here is your answer the question for the combined gas laws

5 0

3 years ago

This table shows the densities of a sample of substances.

Arisa [49]

When placed in a container, the heaviest (most dense) will sink to the bottom and the lightest (least dense) will rise to the top.
Therefore, Gasoline would rise to the top.

3 0

4 years ago

Caffeine, a stimulant in coffee and tea, has a molar mass of 194.19 g/mol and a mass percentage composition of 49.48% C, 5.19% H

lozanna [386]

Answer : The molecular formula of a caffeine is, $C_8H_{10}N_4O_2$