solutions review

Under which conditions of temperature and pressure is a gas MOST soluble?

• low temperature and low pressures

• low temperature and high pressures

• high temperatures and low pressures

• high temperatures and high pressures

The solubility of a salt in water depends primarily on

• the rate at which you stir

• surface areas of the salt

• the temperature of the water

• pressure

two samples of a substance will be dissolved in solutions. One is kept whole and the other is broken into pieces. which best describes what would happen.

• the substance will dissolve more quickly if broken into pieces because of the increased surface area

• the substance will dissolve more slowly if broken into pieces because more particles can react

• the substance will dissolve more slowly if broken into pieces because of increased volume

• he substance will dissolve more quickly if broken into pieces because of decreased mass

Why is water the universal solvent?

• water is an effective solvent of both polar and nonpolar molecules

• water dissolves more chemicals, both inorganic and organic, than any other solvent

• water is the only solvent found in abundance throughout the universe

• water is an effective solvent in all three phases

water has many unique chemical properties. Which property makes water a good good solvent?

• strong polarity

• weak conductivity

• high viscosity

• low pH

When trying to dissolve sugar into water you can increase the rate by

• heating the water

• stirring

• crushing the sugar

• all of the above

Hexane and water do not form a solution. which is the best reasone

• Hexane is nonpolar and water is ionic

• Hexane is nonpolar and water is polar

• Hexane is polar and water is nonpolar

Based on solubility rules which is soluble in water?

• Pb(NO3)2

• PbSO4

• PbCO3

• Pb3(PO4)2

Which compound is insoluble in water?

• Sodium Bromide (NaBr)

• calcium bromide (CaBr2)

• potassium bromide (KBr)

• silver Bromide (AgBr)

What is the total number of moles of solute in 0.5 L or 3.0 M solution?

mol = MxL

• 1.5

• 6

• 0.167

• 2.5