Other Chemistry Answers

Apply Le Chatelier’s principle to predict whether, and in which direction, the following
established equilibrium would be shifted by the changes imposed:

2CO(g) + O2(g) <--> 2CO2(g) + heat energy

a) temperature is increased
b) vessel pressure is decreased
c) oxygen is removed
d) platinum catalyst is added
e) carbon monoxide is removed

Equilibrium Systems Ch.15
Two part multiple choice question:

Sulfuric acid is the most common commercial acid, with millions of tonnes produced each year. The second step in the “contact” process for industrial production of sulfuric acid involves the oxidation of sulfur dioxide gas catalyzed by contact with V2O5(s) powder. The reaction equation is

2SO2(g)+O2(g) -> 2SO3(g) delta H= -198kJ

The imposed condition that does not shift equilibrium toward the product is
A. adding the vanadium pentoxide catalyst
B. decreasing the temperature
C. decreasing the container volume
D. adding oxygen to the system container

If the equilibrium constant for the above oxidation reaction at a given temperature is 2.4x10^3, then the constant for the reverse reaction (written as the decomposition of sulfur trioxide) is
A. 2.4x10^3
B. 4.2x10^-4
C. 2.4x10^-3
D. 4.2x10^4

The formula of a hydrate of an alkali metal carbonate may be determined by titration with standard hydrochloric acid. If 2.316g of a hydrate of sodium carbonate (Na2CO3●xH2O) is required to completely neutralize 38.49mL of hydrochloric acid (0.4198mol/L), determine the formula of the hydrate.

A teaspoon of milk of magnesia contains 12.0 mg of magnesium hydroxide. What volume of 0.010 mol/L HCl in a person's stomach would be neutralized by this teaspoon of antacid?

A teaspoon of milk of magnesia contains 12.0 mg of magnesium hydroxide. What volume of 0.010 mol/L HCl in a person's stomach would be neutralized by this teaspoon of antacid?

42.3mL of 0.285M hydrochloric acid wee used to titrate a sodium hydroxide solution having a concentration of 0.714M. What volume of base was needed?

if i have 4.56 x 10^21 atoms of silver, what is the mass of the silver?

Determine the Concentration of H+
, OH-
, pH, and pOH of the following solutions:

1. 0.0100 M
2. 0.0200 M HOCl [ HOCl(aq) + H2O(l) ⇄ H3O+(aq) + OCl-(aq); Ka = 3.0 x 10 -8]

What type of intermolecular force is responsible for the attraction between a polar molecule that induces a charge on a non-polar molecule?
Dipole-dipole
Ion-induced dipole
Ion-dipole

Which of the following can result in a dispersion force?

When a nonpolar molecule becomes slightly polar for an instant
When the oppositely charged ends of a polar molecule attract each other
When there is a very strong dipole-dipole attraction between a hydrogen atom and a polar-molecule
When an ion comes close enough to a nonpolar molecule to change its electron density