quiz 2: toolbox to solubility constant

The molecular weight of CaCl2 is 110.98 g/mol. In order to make up 500. mL of a 0.500 M solution, you need:

27.7g

Using a value of Ksp = 1.8 x 10-2 for the reaction PbCl2 Pb+2(aq) + 2Cl -(aq). If the value of Ksp was determined to be only 1.2 x 10-2:

The solution is unsaturated.

Electricity is conducted through a solution containing an electrolyte by:

ions

Determine the molecular weight for Mg(NO3)2.

148.33 g

When one mole of sodium chloride dissociates in water, it produces:

2 moles of ions

Select all the items on the following list that are ions.

PO4-3 HCO3- Al+3 Hg2+2

If solid NaCl is added to a saturated water solution of PbCl2 at 20o C, a precipitate is formed. How would this affect the value of the Ksp for [Pb2+][Cl-] in solution?

The Ksp remains the same.

Balance the reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coefficient is "1." 2AgNO₃ + MgCl₂ 2AgCl + Mg(NO₃)₂

blank blank

As the concentration of a given salt solution increases, the conductivity of the solution:

increases

_____ occurs when the product of the ion concentrations exceeds the Ksp.

precipitation

If a crystal of KNO3 is added to a saturated water solution of KNO3 at 20°C, the added crystal will

remain apparently unchanged.

The concentration of the particles in the solid phase always _____.

remains the same regardless of how much quantity is present

How does the polarity of the solute affect how well a solvent will dissolve?

similar polarity makes the solvent more likely to dissolve

Which of the following choices is not a factor in the amount of electrical conductivity of a solution?

size of container

Select all that apply. When is Ksp determined for a system?

when equilibrium is established when the two phase system is saturated