solutions Flashcards
(19 cards)
solutions are what
mixtures
solutions are made of which two components
solute
solvent
what do we call solutions where the solvent is water ?
aqueous solution
define concentration and units for it
concentration is the amount of solute dissolved in a solvent
mol/L moles per liter
what is molar concentration
number solute moles per liter of solution (M)
what’s the formula for morality
morality (M) = moles of solute / Volume of solution in Liters
how can we lowers the concentration of a solution
dilute it by adding more solvent to the solution (usually water)
a base is a substance that
dissolves in water
increases the OH- ions (in solution)
list three types of bases
metal oxides
metal hydroxides
metal carbonates
how can bases be made
metal oxides react with water to form OH ions
what do bases do to the pH when they dissolve in water
raises pH of solution
increases the OH ions in solution
what happens to the Ph when the amount oh H+ ions increase in solution
it decreases the pH (more acidic )
why do OH ions increase pH
they reduce concentration of H+ ions in solution
what type of reaction occurs between an acid and a base
neutralization reaction
what does soluble mean
a substance that can dissolve in a solvent
what does insoluble mean
a substance that can’t dissolve in a solvent
what is aliquot
amount taken from a larger quantity
Does adding water change the amount of solute or moles in a solution?
No amount of so remains exactly the same
what does it mean to dissolve
further) separation of
oppositely-charged ions in
solution
