acids Flashcards
what are standard solutions
a solution for which its concentration is known accurately
what 3 things should you ensure when making standard solutions
you have clean dry equipments
make washings to remove any salt before making up the solution to the specified amount
invert the volumetric flask to ensure that everything is dissolved
what are acids
releases H+ ions in aqueous solution
what are alkali
def
release OH- ions in aqueous solution
what are strong and weak acids
strong acids fully dissociate in aqueous solutions and weak acids partially disscociate in aqueous solutions
how does ammonia react with acids
ammonia + acid —> ammonium salt
3 strong acids and 1 weak
HCL H2SO4 HNO3
CH3COOH
1 weak base
NH3
4 types if bases
metal oxides
metal hydroxides
metal carbonates
ammonia
product of acid + metal oxide
salt and water
product if acid + metal
salt and hydrogen
product of acid and metal hydroxide
salt and water
what is the end point if titration
the point where the indicator changes colour
how to decrease percentage uncertainty
make bigger measurements
use equipments that record to more dp (higher resolution)
what are alkali
soluble bases
