TSNF - Unit 7

At equilibrium, rates of the forward and reverse reaction are...

• The same

• Not the same

A system at equilibrium

• Must have reactants and products

• Must have products only

• Must have reactants only

At equilibrium, concentrations of reactants and products are

• equal

• constant

At what time does the system first reach equilibrium?

• 24s

• 40s

• 60s

• 80s

The equilibrium constant expression, Kc, given aA + bB ⇄ cC + dD, is...

Which substance(s) would not be included in a equilibrium constant expression?

• NaCl(s)

• NaCl(aq)

• NaCl(l)

• NaCl(g)

If a K value is greater than 1,

• more products are present at equilibrium

• more reactants are present at equilibrium

If a K value is VERY large,

• the reaction has essentially gone to completion

• there are more reactants present at equilibrium

If K < Q, the reaction will proceed in the...

• reverse direction to reach equilibrium

• forward direction to reach equilibrium

When a reaction at equilibrium is reversed,

• the K value's sign is flipped

• the K value is divided by 2

• the K value is inverted