,
, 5 -
formulae, Equations and Amounts substances
of
Ionic Equations
· When an ionic substance dissolves in water
o some long remain dissolved in waver in the reaction:spectator ions
be used find outthe ratio which acids without
react
· lonic equations can to
writing any equation
e.s. CaCIraq) H2SO4/ag) +
dCaSOp/s) +2HClraa)
Caraa) 2c-raq) + +
2Hraa so,"lag)
+
CaSO,/s) 2H raal+zci-rag
+
Caraa) SO-lag) CaSO4/s
Calculatins Moles
maSS
MoleS =
Mr
o balanced chemical equations can be used to calculate reacting masses
Limiting Reasenus
· Calculate no. ofmoles ofeach reagent
· Use equation to find mole ratio to find which reagentis limiting and
which is in excess
.
.
feild and Atom Econome
mass of productobtained
100
-
·. Yeild=
maximum theoretical yeild
molar mass ofwanted product from equation
Atom Economy =
total
↓100
molar mass products
of from equation
Ideal Gas Equation
P=
PV nRT Pressure Pa kPa Pa
6<more
in
=
x1000 =
↓ Volume mi
e
in
ma 1000000
x Pa
=
n no. ofmoles
= :1,000,000
R 8.31/mol" k-1
=
oc -k +
=
273
Temperature
T: in 1
Solution Calculations Gas Calculations
moles:
concentration volume ~ rom -
n = =
/moldm-3 10m3 sir rdm* mol- 24
ger at TP 24dm3mol"
=
, 5 -
formulae, Equations and Amounts substances
of
Ionic Equations
· When an ionic substance dissolves in water
o some long remain dissolved in waver in the reaction:spectator ions
be used find outthe ratio which acids without
react
· lonic equations can to
writing any equation
e.s. CaCIraq) H2SO4/ag) +
dCaSOp/s) +2HClraa)
Caraa) 2c-raq) + +
2Hraa so,"lag)
+
CaSO,/s) 2H raal+zci-rag
+
Caraa) SO-lag) CaSO4/s
Calculatins Moles
maSS
MoleS =
Mr
o balanced chemical equations can be used to calculate reacting masses
Limiting Reasenus
· Calculate no. ofmoles ofeach reagent
· Use equation to find mole ratio to find which reagentis limiting and
which is in excess
.
.
feild and Atom Econome
mass of productobtained
100
-
·. Yeild=
maximum theoretical yeild
molar mass ofwanted product from equation
Atom Economy =
total
↓100
molar mass products
of from equation
Ideal Gas Equation
P=
PV nRT Pressure Pa kPa Pa
6<more
in
=
x1000 =
↓ Volume mi
e
in
ma 1000000
x Pa
=
n no. ofmoles
= :1,000,000
R 8.31/mol" k-1
=
oc -k +
=
273
Temperature
T: in 1
Solution Calculations Gas Calculations
moles:
concentration volume ~ rom -
n = =
/moldm-3 10m3 sir rdm* mol- 24
ger at TP 24dm3mol"
=
