Chem topic 9

Created by

Sophie Koutalakis

Cards (39)

what trade places in double displacement?
cations trade places
where are cations in written formula?
they are written first
acid is a proton_
donor
base is a proton _
receiver
acids _ pH
lower
bases _ pH
raise
are there more or less H+ in acids?
more
are there more or less H+ in bases?
less
what is in bases more than H+?
OH
what is the pH equation?
pH = -log[H+(mol/L)]
what does mol/L mean?
molarity
what does H+ represent in pH equation?
concentration (molarity)
what is aqueous?
chemicals that dissolve in water
what are solids?
chemicals that don't dissolve in water
solubility
if something is soluble or insoluble in water
if everything is aqueous at the end of a reaction,
no reaction actually happened
in acid reactions, there with always be an _ to donate protons
H
in acid reactions, _ will always be the acid/proton donor
H
net ionic equations
show only the ions that participate in the reaction
spectator ions
ions that do not participate in a reaction
total ionic equation
writing out all ions
you should write the _ for net ionic equations
states
when ions are soluble in water they are
pulled apart
water is more dense as a
liquid
water is a liquid at
room temperature
why is water a liquid at room temp?
water is polar covalent
water has a _ boiling point
high
water can _ a lot of molecules
dissolve
why can water dissolve a lot of molecules?
it is very polar, nearly ionic, stabilizes ions
what is IM for 0.0-0.5?
non polar covalent
what is IM for 0.51-1.6?
polar covalent
what is IM for more than 2.0?
ionic
1.6-2.0 gap is _ if it involves a metal
ionic
1.6-2.0 gap is _ if it involves only non metals
polar covalent
what is the equation for pOH?
pOH = -log [OH (mol/L)]
how do you find pH from pOH?
subtract pOH from 14
you have to do _ to find pH
stoicheometry
why do you have to do stoicheometry to find pH?
have to know ratio of H+
pH is calculated with,
H+ ions