Consider the reaction IO−4(aq)+2H2O(l)⇌H4IO−6(aq);Kc=3.5×10−2 If
you start with 25.0 mL of a 0.905 M solution of NaIO4, and then
dilute it with water to 500.0 mL, what is the concentration of
H4IO−6 at equilibrium?
1. Calculate [H3O+] in the following aqueous solution at 25 C:
[OH−]=1.1×10−9 M.
2. Calculate [H3O+] in the following aqueous solution at 25 C:
[OH−]=2.4×10−2 M .
3. Calculate [H3O+] in the following aqueous solution at 25 C:
[OH−]=6.2×10−12 M
then classify the solutions as acidic or basic.
What is the equilibrium constant expression for the following
reaction:
HCN(aq) +
H2O(l)↔CN−(aq) +
H3O+(aq)
Choose from the list below and enter the letters alphabetical
order. (e.g. For an equilibrium constant of
[H3O+]-1eq[HCN]eq
enter AH.)
A) [HCN]eq
E) [HCN]-1eq
I)
[Ru(NH3)62+]6eq
B) [H2O]eq
F) [H2O]-1eq
J) [Ru2+]-6eq
C) [CN-]eq
G) [CN-]-1eq
K) [NH3]-6eq
D) [H3O+]eq
H) [H3O+]-1eq
L)
[Ru(NH3)62+]-6eq
[H3O^+(aq)]
Drops of Stock Solutions
Reaction Time
Test Tube
KMnO4
H2O
H3O^+/H2SO4
C2O4H2
C-1
15
25
5
5
14mins 3 sec
C-2
15
15
15
5
8mins 10sec
C-3
15
5
25
5
3mins 8 sec
a) What are the molecules and ions doing
in solution – are they static or moving around?
b) Can ions or molecules that are isolated
from one another react? What must happen for them to react?
c) Why should the permanganate disappear
faster if...
Consider the titratkon of 50.0 mL of 0.200 M
HC2H3O2 (Ka = 1.8 x
10-5) with 0.100 M NaOH.
(A.) Calculate the pH of the
HC2H3O2 before the addition of
NaOH
(B.) Calculate the pH of the solution after the addition of 20.0
mL of 0.100 M NaOH.
(C.) Calculate the pH of the solution after the addition of 50.0
mL of 0.100 M NaOH.
(D.) Calculate the pH of the solution after the addition of
100.0 mL of 0.100...
Consider the reaction: 2HCl(aq) + Ba(OH)2(aq) ! BaCl2(aq) + 2
H2O(l) deltaH = "118 kJ
A) Calculate the heat produced when 700.0 mL of 0.500 M HCl is
mixed with 300.0 mL of 0.500 M Ba(OH)2. Note: One of the solutions
is the limiting reagent.
B) Calculate the final temperature if both solutions were
initially at 25.0° C, and they were mixed together in a calorimeter
with a heat capacity of 180.3 J/C° Note: The density specific heat
capacity of...
Consider the reaction: CO(g)+H2O(g)⇌CO2(g)+H2(g) Kc=102 at 500 K
A reaction mixture initially contains 0.135 M CO and 0.135 M H2O.
What is the equilibrium concentration of [CO], [H2O], [CO2], and
[H2]
Consider the following reaction:
SO2Cl2(g)⇌SO2(g)+Cl2(g)
Kc=2.99×10−7 at 227∘C
Part A
If a reaction mixture initially contains 0.195 M SO2Cl2, what is
the equilibrium concentration of Cl2 at 227 ∘C?
[Cl2] =