Rice Table
What is the equilibrium constant for the following reaction:
O2 + N2 --> 2NO
K = [NO]2 / [N2][O2]
What is the most restrictive definition of acids and bases?
Arrhenius (why?)
True or false: a weak acid dissociates 100%
false
In a binary acid, the stronger the polarity of the bond, the _______
easier it is to remove the H
WHY?
How do you determine the pH of a solution?
pH = -log[H3O+] = -log[H+]
Remember:
pOH = -log[OH-]
what types of matter are not included in equilibrium constants?
solids and pure liquids
In a Bronsted Lowry reaction, the acid ____
donates a proton
Which of the following is a strong acid:
HF, HNO2, HNO3, H3PO4, HClO3
Nitric acid
Do you expect H2SO3 or H2SeO3 to be the stronger acid? Why?
H2SO3 because S is more electronegative than Se
What is the pH of 0.15 M H+?
pH: 0.82
A mixture of 5.0 mol H2(g) and 10.0 mol I2(g) are placed in a 5.0 L container at 450°C and allowed to come to equilibrium. At equilibrium the concentration of HI(g) is 1.87M. Calculate the value for the equilibrium constant, K, for this reaction under these conditions.
K = 50.5
In a Bronsted Lowry reaction, conjugate pairs ____
differ by one proton
Which of the following cannot be a Bronsted-Lowry base?
OH-
H2O
NH3
NH4+
NH4+
Which of the following is the strongest acid?
HBrO4
HBrO3
HBrO2
HBrO
HBrO4
What is the pOH of 9.78×10−2 M OH?
pOH: 1.01
If the Kp for the following reaction is 2.4 x 10-9 and the initial concentration of CO2 is 2 atm, what are the partial pressures of the substances at equilibrium? Hint: make necessary assumptions to solve.
PCO2 = 2atm
PCO = 6.9x10-5atm
In the following reaction name the acid, base, conjugate acid, and conjugate base:
NH3(g) + H2O(l) ⇌ NH4+(aq) + OH-(aq)
NH3 -- base
H2O -- acid
NH4+ -- conjugate acid
OH- -- conjugate base
Which of the following is the conjugate acid of HPO4^2-?
H3PO4
H2PO4-
HPO42-
PO43-
H2PO4-
Why is the answer not PO4^3-?
Arrange in order of increasing acidity: HClO4, NaCl, HF, Ca(OH)2, CN-
Ca(OH)2 < CN- < NaCl < HF < HClO4
Is the following solution acidic, basic, or neutral?
[H3O+] = 8.6×10−3 M
acidic
What is the equilibrium concentration of IBr if you start with 0.68 M of I2 and 0.32 M of Br2?
K = 1.00 x 10-5
1.48 x 10-3 M IBr
The Lewis acid and base definition is based on ____
the movement of electrons
Which of the following is amphoteric?
NH4+
HF
HCl
HCO3-
HCO3-
Arrange the following in order of increasing acid strength in aqueous solution: HClO2, HNO2, and HNO3.
HNO2 < HClO2 < HNO3
What is the concentration of H3O+ at pH = 3.77
0.00017 M H+