Calculate the concentrations of all the species in a
0.301 M
Na2CO3
solution.
[CO32−]
= M
[Na+] = M
[HCO3−] = M
[OH−] = M
[H2CO3] = × 10
M
(Enter your answer in scientific notation.)
[H+] = × 10 M
(Enter your answer in scientific notation.)
Determine the concentrations of Na2CO3, Na , and CO32– in a
solution prepared by dissolving 2.61 × 10–4 g Na2CO3 in 2.25 L of
water. Express all three concentrations in molarity. Additionally,
express the concentrations of the ionic species in parts per
million (ppm). Note: Determine the formal concentration of CO32–.
Ignore any reactions with water.
Determine the concentrations of Na2CO3, Na , and CO32– in a
solution prepared by dissolving 1.82 × 10–4 g Na2CO3 in 1.75 L of
water. Express all three concentrations in molarity. Additionally,
express the concentrations of the ionic species in parts per
thousand (ppt). Note: Determine the formal concentration of CO32–.
Ignore any reactions with water.
Determine the pH and the concentrations of all aqueous species
(Na+ , H+ , OH– , H3PO4, H2PO4 – , HPO4 2– , and PO4 3– ) in a
0.500 M Na3PO4 solution. (Note that this is a sodium phosphate
solution, not a phosphoric acid solution!)
Calculate the concentrations of all the species in a
0.487 M
Na2CO3
solution. For
H2CO3,
Ka1 = 4.2 ×10−7
and Ka2 =
4.8
×10−11.
[CO32−]
= M
[Na+] = M
[HCO3−] = M
[OH−] = M
[H2CO3] = M
(Enter your answer in scientific notation.)
[H+] = M
(Enter your answer in scientific notation.)
Determine the [OH?] of a solution that is 0.115M in CO32-.
The kb value for CO32- is 2.1e-4.
Determine the pH and pOH of a solution that is .115 M in
CO32-
1) Calculate the pH and the concentrations of all species
present (H3O+, OH−, HIO3, and IO−3) in 0.0528 M HIO3. Ka for HIO3
is 1.7×10−1.
2) Calculate the concentrations of all species present (H3O+,
OH−, HIO3, and IO−3) in 0.0528 M HIO3.
Calculate the pH and the concentrations of all species present
in 0.18 M H 2 SO 3 . ( K a1 = 1.5× 10 −2 , K a2 = 6.3× 10 −8 )
Express your answer to three significant figures and include the
appropriate units
calculate the concentrations of all species present at
equilibrium for a .200M solution of sodium arsenate, Na3AsO4. (
Don't forget the hydrolysis reactions of the arsenate ion)