Maxwell-Boltzmann Kinetics

Which is a correct unit for expressing the rate of a reaction?

• mol dm^-3 s^-1

• mol dm^-3 s

• mol s

• mol^-1 dm³ s^-1

Tags

NGSS.HS-PS1-5

Which quantity can be changed by the use of a catalyst?

• I and II only

• I and III only

• II and III only

• I, II and III

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

Which change increases the rate of a chemical reaction?

• Increasing the size of solid reactant particles

• Decreasing the concentration of aqueous reactants

• Increasing the surface area of a solid reactant

• Decreasing the pressure of gaseous reactants

Which is not affected by an increase in temperature?

• Rate of reaction

• Collision frequency

• Collision geometry

• % of molecules with E ≥ E_a

Tags

NGSS.HS-PS1-5

In which flask will the reaction between 2.0 g of magnesium carbonate and 25 cm³ 1.0 mol dm^–3 hydrochloric acid occur most rapidly?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-5

Which statement about the kinetic theory is not correct?

• The particles in ice vibrate about fixed points.

• The particles in steam have more energy than the particles in ice.

• All the particles in water have the same amount of energy at 298 K.

• Evaporation of water occurs at all temperatures between 273 K and 373 K when the atmospheric pressure is 101 kPa.

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

Which changes increase the rate of the reaction below? C₄H₁₀ (g) + Cl₂ (g)  →  C₄H₉Cl (l) + HCl (g)

• I and II only

• I and III only

• II and III only

• I, II and III

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

Which of the following can increase the rate of a chemical reaction?

• I and II only

• I and III only

• II and III only

• I, II and III

Tags

NGSS.HS-PS1-5

Hydrochloric acid is reacted with large pieces of calcium carbonate, the reaction is then repeated using calcium carbonate powder. How does this change affect the activation energy and the collision frequency?

• Activation energy - INCREASES ; Collision frequency - INCREASES

• Activation energy - STAYS CONSTANT ; Collision frequency - INCREASES

• Activation energy - INCREASES ; Collision frequency - STAYS CONSTANT

• Activation energy - STAYS CONSTANT ; Collision frequency - STAYS CONSTANT

Tags

NGSS.HS-PS1-4

Which statement is true about using sulfuric acid as a catalyst in this reaction?

• I and II only

• I and III only

• II and III only

• I, II and III

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6