Reaction Rates and Equilibrium Review

What piece of apparatus could be used to measure the volume of gas produced in a reaction

• Gas syringe

• Beaker

• Top pan balance

Which of the following is a possible unit for rate of reaction?

• cm³/s

• m/s

• N

Tags

NGSS.HS-PS1-5

Which of the following will increase the frequency of successful collisions?

• Increasing the temperature

• Decreasing the pressure

• Decreasing the concentration

Tags

NGSS.HS-PS1-5

Which of the following statements about catalysts is false?

• They speed up reactions

• They provide an alternative reaction pathway with a lower activation energy

• They become chemically changed at the end of the reaction

Which of the following would give a steeper curve on a graph of volume of gas against time?

• Low temperature

• Low concentration

• Using a catalyst

Tags

NGSS.HS-PS1-5

What is this symbol '⇌' used to represent?

• A redox reaction

• A reversible reaction

• A physical change

Tags

NGSS.HS-PS1-6

What is produced in the backward reaction in this equilibrium, when the reaction goes from right to left: NH4Cl(s) ⇌ NH3(g) + HCl(g)?

• NH₄Cl(s)

• NH₃(g) + HCl(g)

• NH₄Cl(s) + NH₃(g) + HCl(g)

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

If the forward reaction is endothermic, what can be deduced about the reverse reaction?

• It is also endothermic

• There is no energy change

• It is exothermic

Tags

NGSS.HS-PS1-4

The equation for the Haber process is: N₂ + 3H₂ ⇌ 2NH₃. What gases will be present at equilibrium?

• Nitrogen and hydrogen

• Nitrogen, hydrogen and ammonia

• Ammonia only

Tags

NGSS.HS-PS1-7

One of the stages in sulfuric acid production is described by this equation: 2SO₂(g) + O₂(g) ⇌ 2SO₃(g). What will happen to the yield of SO₃ if the pressure is increased?

• It will go up

• It will go down

• It will stay the same