In a 1.0× 10–2 M solution of CH3NH3Br(aq), identify the relative
molar amounts of these species. List them from Most to Least,
please.
H2O
Br-
CH3NH2
CH3NH3
OH-
H3O+
HBr
Solution A (1.0 M Sucrose) and solution B (1.0 M NaCl) are
separated by a dialysis membrane. If the membrane is spontaneously
permeable to Sucrose, NaCl, and Water, what is the INITIAL reaction
of Sucrose, NaCl, and Water?
Given a solution of 0.125 M CH3COOH (aq) and
a solution of 0.150 M NaCH3COO (aq), how would
you prepare 100.0 mL of a buffer solution with a pH of 4.400?
pKa = 4.740 for CH3COOH
(aq).
Select one:
a. Mix 68.6 mL of the CH3COOH (aq) with 31.4
mL of the NaCH3COO (aq)
b. Mix 27.6 mL of the CH3COOH (aq) with 72.4
mL of the NaCH3COO (aq)
c. Mix 72.4 mL of the CH3COOH (aq) with 27.6
mL...
A buffer solution is made that is 0.363 M in
HClO and 0.363 M in
NaClO .
(1) If Ka for HClO is
3.50×10-8 , what is the pH of the
buffer solution?
(2) Write the net ionic equation for the reaction
that occurs when 0.082 mol HCl is
added to 1.00 L of the buffer solution.
Use H3O+ instead of
H+ .
A buffer solution is made that is 0.388 M in
HCN and 0.388 M in
NaCN.
(1)...
Just answers.
A. A buffer solution that is 0.431 M in
HClO and 0.431 M in
NaClO has a pH of 7.46.
(1) The addition of 0.01 mol of
H3O+ to 1.0 L of this buffer
would cause the pH to _________(increase slightly, increase by 2
units,decrease slightly,decrease by 2 units,not change.)
(2) The capacity of this buffer for added
OH- could be increased by the addition
of 0.147 mol _________(of the weak
acid,of the salt.)
B. How many grams of...
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.170 M HClO(aq) with 0.170 M KOH(aq). The ionization constant for HClO can be found here.
(a) before addition of any KOH ______
(b) after addition of 25.0 mL of KOH _____
(c) after addition of 40.0 mL of KOH ______
(d) after addition of 50.0 mL of KOH ______
(e) after addition of 60.0 mL of KOH ______