What precipitate, if any, could be formed if sodium chloride is mixed with silver sulfate?
Question 29 options:
Na2S
AgCl
Na2SO4
NaCl
no precipitate
Question 30 (1 point)
If the equilibrium constant for a reaction is increased by a temperature change, the concentration of the
Question 30 options:
reactants and products both increase
reactants increase and products decrease
products increase and reactants decrease
products and reactants both decrease
Question 32 (1 point)
For the following equilibrium, what is the effect of adding O2 to the system, at a constant volume and temperature? 2NO + O2 ? 2NO2
Question 32 options:
no change in the concentration of NO and NO2
a decrease in the concentration of NO2
an increase in the concentration of NO
a decrease in the concentration of O2
an increase in the concentration of NO2
Question 33 (1 point)
For the reaction, Cl2(l) + 2Na(s) ---> 2NaCl(s), the rate of the forward reaction could be increased most by
Question 33 options:
adding Na
cooling the system
removing NaCl
using gaseous Cl2
using solid Cl2
Question 35 (1 point)
The activation energy of a reaction may be defined qualitatively as the:
Question 35 options:
energy supplied to a catalyst
energy supplied by the attractive forces between molecules
heat content of the products minus that of the reactants
energy required by reactant molecules to undergo a reaction
Question 37 (1 point)
An endothermic reaction was found to have the following reaction rate expression: Rate = k[A]2[B]3. The greatest increase in the rate would be caused by
Question 37 options:
cooling the system
removing some B from the system
doubling the concentration of B
tripling the concentration of A
Question 38 (1 point)
Given that Ksp for AgIO3 (silver iodate) is 4.0 x 10-8, the concentration of Ag+ in a saturated solution is
Question 38 options:
1.6 x 10-15 M
4.0 x 10-8 M
2.0 x 10-4 M
4.0 x 10-4 M
Question 42 (1 point)
A 12 M solution of CH3COOH (acetic acid) is best described as a
Question 42 options:
concentrated weak acid
having a pH below 1
dilute strong acid
concentrated strong acid
Question 47 (1 point)
In a basic solution [H+] is
Question 47 options:
> [OH-]
< 10-7 M
= 10-7 M
> 10-7 M