Homework: Equilibrium Amounts Page 2
ADVERTISEMENT
1
2-13
5. Solid silver bromide, AgBr, has a K
value of 5.0 × 10
at 25ºC.
sp
a.
Write the chemical equation showing this dissolving process.
b.
Write the solubility equilibrium expression.
c.
Complete this I.C.E chart. Since the amount of the ions is not known, it is just called x until is it calculated later.
+1
–1
AgBr
Ag
Br
Mole Ratio
Initial amount
n/a
0
0
Change
n/a
Equilibrium amount
n/a
x=
x=
d.
_______________ Use the value of K
and the equilibrium expression to solve for the amount of silver ion in solution
sp
under these conditions.
-28
6. Solid tin (II) hydroxide, Sn(OH)
, has a K
value of 1.4 × 10
at 25º C.
2
sp
a.
Write the chemical equation showing this dissolving process.
b.
Write the solubility equilibrium expression.
c.
Complete this I.C.E chart. Use “x” for the unknown amounts.
+2
–1
Sn(OH)
Sn
OH
2
Mole Ratio
1
1
2
Initial amount
n/a
0
0
Change
n/a
Equilibrium amount
n/a
d.
_______________ Use the value of K
and the equilibrium expression to solve for the amount of tin(II) ion in solution
sp
under these conditions.
e.
_______________ Calculate the concentration of the hydroxide ion at equilibrium.
7.
A sample of lead (II) carbonate, PbCO
, is added to water at 25ºC. At equilibrium the concentration of lead (II) ions is
3
-7
2.7 × 10
M.
a.
_______________ What is the concentration of the carbonate ions?
b.
_______________ What is K
for PbCO
?
sp
3
+
2-
-12
8.
Ag
and CrO
ions are in a saturated solution of silver chromate, Ag
CrO
, at 25ºC. (K
= 1.1 × 10
)
4
2
4
sp
a.
Write the chemical equation showing this dissolving process.
b.
_______________ Calculate the concentration of the silver ions.
-36
9.
Lead(II) arsenate is dissolved in water at 25°C. K
=4.0 × 10
sp
a.
Write the chemical equation showing this dissolving process.
b.
Write the solubility equilibrium expression.
2+
c.
_______________ Calculate the equilibrium concentration of Pb
3-
d.
_______________ Calculate the equilibrium concentration of and AsO
.
4
Homework: Equilibrium Amounts
2
4/16/15
ADVERTISEMENT
0 votes
Related Articles
Related forms
Related Categories
Parent category: Education