MDCAT Chemistry MCQs

Average disappearance rate = decrease in concentration divided by time.
The positive magnitude is used for a reactant-disappearance rate.

Average disappearance rate = decrease in concentration divided by time.
The positive magnitude is used for a reactant-disappearance rate.

For rate ∝ [A]ⁿ, the rate factor equals the concentration factor raised to n.
The observed change gives the stated order.

For rate ∝ [A]ⁿ, the rate factor equals the concentration factor raised to n.
The observed change gives the stated order.

For rate ∝ [A]ⁿ, the rate factor equals the concentration factor raised to n.
The observed change gives the stated order.

For rate ∝ [A]ⁿ, the rate factor equals the concentration factor raised to n.
The observed change gives the stated order.

For rate ∝ [A]ⁿ, the rate factor equals the concentration factor raised to n.
The observed change gives the stated order.

An equilibrium shifts in the direction that opposes the imposed change.
Applying this rule gives the stated direction.

For a 1:1 salt, both ion concentrations equal the molar solubility s.
Therefore Ksp = s².

For a 1:1 salt, both ion concentrations equal the molar solubility s.
Therefore Ksp = s².

For a 1:1 salt, both ion concentrations equal the molar solubility s.
Therefore Ksp = s².

For a 1:1 salt, both ion concentrations equal the molar solubility s.
Therefore Ksp = s².