Equilibrium: Kc
True or False: one characterization of equilibrium is the concentrations of the reactants are equal to the concentrations of the products.
What is false?
CO (g) + 2H2 (g) ⇌ CH3OH (g)
The reaction will shift this way when we add He (g)
What is no shift?
A conjugate acid-base pair differs by
What is one H+?
The amount that strong acids dissociate.
What is 100%?
A stronger acid is HClO or HClO4
What is HClO4?
H2O (g) + C(s) ⇌ CO (g) + H2 (g). The delta n for the reaction
What is 1?
2NOBr (g) ⇌ 2NO (g) + Br2 (g)
If the container volume is increased, the reaction will shift to where.
What is a shift towards more moles of gas (from left to right)?
Conjugate acid of HPO42-
What is H2PO4-?
The stronger the acid, the (higher/lower) the pKa and the (higher/lower the Ka)
What is a lower (smaller) pKa and a higher (larger) Ka?
One of the following is false
pKw-pKa=pKb
Kw-Kb=Ka
14-pOH=pH
14-pKa=pKb
What is Kw-Kb=Ka
The Kc value for the equation 2CO2 (g) ⇌ 2CO (g) + O2(g)
What is Kc= ([CO]^2[O2]) / ([CO2]^2)?
The way a reaction will shift when the catalyst is removed.
What is no shift?
The conjugate base of HPO42-
What is PO43-?
The strong acids (6)
What is HNO3, HClO4, H2SO4, HCl, HBr, HI?
The Kb expression for combination of the weak base CH3NH2 and H2O.
What is Kb = ([CH3NH3+][OH-]) / [CH3NH2]
2A⇌B + C has Kc1 and E⇌ A + C has Kc2
The Kc for 2E⇌B+3C
What is (Kc1) x (Kc2)^2?
CO (g) + 2H2 (g) ⇌ CH3OH (g) delta H = -91 kJ
[CH3OH] will increase or decrease when we increase the reaction temperature
What is [CH3OH] decreases?
HCN + NO3- ⇌ CN- + HNO3 Starting with equal concentrations, the reaction will proceed this way to equilibrium.
What is proceed to the left (form more reactants)?
The strong bases (4)
What is OH-, NH2-, O2-, H-
Of the following aqueous salt solutions, one is acidic:
KNO, NH4NO3, KF, Ba(CN)2, Na2CO3
What is NH4NO3?
The reaction will proceed this way when Q<K to reach equilibrium
What is proceed from left to right?
CaCl2 (s) ⇌ Ca2+ (aq) + 2Cl- (aq)
The reaction will shift this direction if AgNO3 is added.
What is from left to right?
The pOH is 13.5 and the solution is.
What is very acidic?
Choose the weakest acid of the following: HOI Ka=2.3x10^-4, HCO2H pKa=3.74, HN3 pKa=4.72, and HIO3 Ka=1.7x10^-1
What is HOI
Of the following one does not change the % dissociation of HF when added to 0.10 M HF (aq).
HBr, KF, KOH, KBr, NaF
What is KBr?