Chemistry Quiz on Solutions and Solubility

Which mixture can be separated by using the equipment shown below?

• NaCl(aq) and SiO2(s)

• NaCl(aq) and C6H12O6(aq)

• CO2(aq) and NaCl(aq)

• CO2(aq) and C6H12O6(aq)

A student observed the following reaction: AlCl3(aq) + 3 NaOH(aq) → Al(OH)3(s) + 3 NaCl(aq). After the products were filtered, which substance remained on the filter paper?

• NaCl

• NaOH

• AlCl3

• Al(OH)3

In an aqueous solution of sodium fluoride, the solvent is

• F

• Na

• NaF

• H2O

Which compound is insoluble in water?

• calcium bromide

• silver bromide

• potassium bromide

• sodium bromide

Which barium salt is insoluble in water?

• BaCO3

• Ba(ClO4)2

• BaCl2

• Ba(NO3)2

Which ion, when combined with chloride ions, Cl-, forms an insoluble substance in water?

• Fe2+

• Mg2+

• Pb2+

• Zn2+

According to Reference Table F, which of these compounds is most soluble at 298 K and 1 atm?

• AgNO3

• AgCl

• PbCrO4

• PbCO3

According to Reference Table F, which substance is most soluble?

• AgI

• PbCl2

• CaSO4

• (NH4)2CO3

Based on Reference Table F, which salt is least soluble?

• FeCO3

• Na2CO3

• BaCl2

• CaCl2

The attraction between water molecules and an Na+ ion or a Cl- ion occurs because water molecules are

• linear

• symmetrical

• polar

• nonpolar