2 Flashcards
Homogenous mixture of 2 or more substances
Solution
The substance present in the smaller amount
A minor species in a solution
Solute
The substance present in the larger amount
A major species in a solution
Solvent
When the solvent is water the solution is said to
be ______
aqueous
A substance that produces ions and therefore conducts
electricity when dissolved in water.
Electrolyte
A substance that ionizes completely when dissolved in water.
A strong electrolyte
A substance that is only partly ionized in water.
A weak electrolyte
A substance that does not produce ions when dissolved in
water and so do not conduct electric current.
Non-electrolyte
Number of moles of a solute that are dissolved per liter of total
solution.
Molarity
Is the number of moles of solute dissolved in one
kilogram of solvent
Molality
Is equal to the gram equivalent weight of a
solute per liter of solution.
Normality
is determined from the mass of solute (usually in gram) per mass of solution (in gram) multiplied by 100
[(w/w)%]
is determined
from the volume of solute (usually in
mL) per mL of solution multiplied by
100.
[(v/v)%]
concentration is found by taking the number of grams of solute per milliliters of solution and multiplying by 100.
[(w/v)%]
When concentrations are very small, as often occurs in dealing with trace amount of pollutants or contaminants,
parts per million (ppm) or parts per billion (ppb) units are used.
