AP Chemistry Equilibrium

Changes in pressure will only affect substances that are in the ______ state.

• solid

• gas

• liquid

The following factors affect the position of equilibrium EXCEPT

• Concentration

• State of Matter

• Temperature

• Pressure

What states of matter are omitted when writing K_eq expressions?

• solids and liquids

• aqueous solutions and gas

• solids, liquids, aqueous solutions and gases

• aqueous solutions & liquids

When K_eq < 1,

• There are more products than reactants when the reaction reached equilibrium.

• There are more reactant than products when the reaction reached equilibrium.

• The amount of reactants is equal to the amount of products.

Tags

NGSS.HS-PS1-6

Calculate [H₂O] if K_eq = 1.2,

[CO₂] = 0.846M, and [CH₄]= 0.0713M

4CuO_(s) +CH_4(g) ⇌ CO_2(g)+4Cu_(s) +2H₂O_(g)

• 0.101 M

• 0.318 M

• 0.0102 M

• 3.77 M

The system shown above is at equilibrium at 28 °C. At this temperature, the vapor pressure of water is 28 millimeters of mercury. The partial pressure of O2(g) in the system is

• 28 mm Hg

• 56 mm Hg

• 133 mm Hg

• 161 mm Hg

A flask contains 0.25 mole of SO₂(g), 0.50 mole of CH₄(g), and 0.50 mole of O₂(g). The total pressure of the gases in the flask is 800 mm Hg. What is the partial pressure of the SO₂(g) in the flask?

• 600 mm Hg

• 250 mm Hg

• 200 mm Hg

• 160 mm Hg

Indicate if compound is miscible or immiscibile in water.

K₂CO₃

• soluble

• insoluble

A boy of weight 600N sits on the see-saw as shown at a distance of 1.5m from the pivot. What is the force F required at the other end to balance the see-saw?

• 450 N

• 350 N

• 4.5 N

• 200 N

Tags

NGSS.MS-PS2-2

What is the force F needed to balance the bar shown?

• 3

• 4

• 6

• 8

Tags

NGSS.HS-PS2-1