Aqueous Reactions- Concentration Units

What do we utilize in lecture an lab

units of concentration

What the four commonly used units of concentrations in chemistry

molarity

weight percent

molality

mole fraction

What do concentration units allows us to express

amount of substance per unit of mass or volume

What is the molarity of a solute expressed as

solute per liter of solution

mol solute/Liters solution

What is weight percent expressed as

mass of solute in 100g of solution

How is confusion with percent by volume usually avoided with

designation w/w (weight by weight)

What should the sum of weight components of a mixture equal to

100%

Define molality

the amount of solute dissolved in 1 kg of solvent

What is molality used most frequently in

determining boiling point and melting point of solutions

What did we previously use mole fraction to describe

the composition of gas mixtures

What is mole fraction useful for

mixtures of liquids and solids as well