AP Chemistry - Unit 7 - Thou Shall Not Forget

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

• The same

• Not the same

Tags

NGSS.HS-PS1-6

A system at equilibrium

• Must have reactants and products

• Must have products only

• Must have reactants only

Tags

NGSS.HS-PS1-6

At equilibrium, concentrations of reactants and products are

• equal

• constant

Tags

NGSS.HS-PS1-6

At what time does the system first reach equilibrium?

• 24s

• 40s

• 60s

• 80s

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

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

•  $K_c\ =\ \frac{\left[C\right]^c\left[D\right]^d}{\left[A\right]^a\left[B\right]^b}$  

•  $K_c\ =\ \frac{\left[A\right]^a\left[B\right]^b}{\left[C\right]^c\left[D\right]^d}$  

Tags

NGSS.HS-PS1-6

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

Tags

NGSS.HS-PS1-6

If a K value is VERY large,

• the reaction has essentially gone to completion

• there are more reactants present at equilibrium

Tags

NGSS.HS-PS1-6

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

• reverse direction to reach equilibrium

• forward direction to reach equilibrium

Tags

NGSS.HS-PS1-6

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