If a solution contains 7.5 X 10-8M Cu+2
and 1.0 X 10-7 M Zn+2 will either...
If a solution contains 7.5 X 10-8M Cu+2
and 1.0 X 10-7 M Zn+2 will either metal
precipitate as a hydroxide salt if the pH is 8.5? At what
concentration of OH- will each metal precipitate?
A 1.00 L solution contains 2.00 X 10^-4 M Cu(No3)2 and 1.2 x
10^-3 M Ethylenediamine (en). The Kf for Cu(en)2 2+ is 1.0X10^20
What is the concentration of Cu 2+ (aq) in the solution?
Suppose the 0.1 M Zn 2+ solution has been diluted (instead of
the Cu 2+ solution), would the measured cell potentials have
increased or decreased? Explain why the change occurred.
A Zn-Cu battery is
constructed as follows at 25oC
Zn(s) |
Zn+2(aq) (0.20 M) ||
Cu+2(aq) (2.5 M) |
Cu(s)
The mass of each electrode is 200.0
gram and the volume of the electrolytes is 1.0 L
a) calculate the
cell potential of the cell
b) calculate the
mass of each electrode after 10.0 amp. of current has flowed for
10.0 hour Remember, the anode loses mass because of the oxidation
reaction while the cathode gains mass due to the...
A solution is made of 1.1 x
10-3M in
Zn(NO3)2 and 0.150 M
in NH3.
After the solution reaches equilibrium, what
concentration of Zn2+(aq) remains?
Kf (Zn(NH3)42+) = 2.8 x
109
A 1.00 L solution contains 2.00×10-4 M Cu(NO3)2 and 2.500×10-3 M
ethylenediamine (en). The Kf for Cu(en)22+ is 1.00×1020. What is
the concentration of Cu2+(aq ) in the solution?
1. What is the pH of a solution that contains 8.025 x 10-4 M
NaOH?
2. Calculate the pH for a 9.21 x 10-7 M solution of Ba(OH)2.
3. Calculate the pOH for a 5.541 x 10-6 M solution of
Ba(OH)2.
4. Calculate the pH for a solution with a hydronium
concentration of 4.52 x 10-3 M.
A solution is made that is 1.1×10−3 M in Zn(NO3)2 and 0.140 M in
NH3.
Part A
After the solution reaches equilibrium, what concentration of
Zn2+(aq) remains?
Express your answer using two significant figures.
adding 50.0 mL of 1.0 x 10^-3 M Sr(NO3)2 and 50.0 mL of 1.0 x
10^-3 M Na2CO3wpuld produce how many grams of SrCO3 precipitate?
ksp of SrCO3 = 1.1 x 10^-10