Grade 11 SAT Revision

1

100

The equation H2(g) + I2(g) --> 2HI(g) is a(n)

Overall Reaction

200

Sequence of steps in a reaction

Reaction Mechanism

300

Minimum energy required for an effective collision

Activation Energy

400

short-lived transitional structure formed during a collision

Activated-Complex

500

In an energy profile the activated complex is found at the 

Peak of the curve

2

100

In a single step reaction represented by the equation A + B --> C, the rate law for the forward one-step reaction is:

R=K[A][B]

200

process used to speed up chemical reactions

Catalysis

300

the slowest step in a reaction 

Rate-determining step

400

It provides an alternative pathway with a lower activation energy

Catalyst

500

A reaction is zero order in reactant A and first order in reactant B. What happens to the reaction rate when the concentrations of both reactants are doubled?

the reaction rate is doubled

3

100

forward reaction rate equals reverse reaction rate

Equilibrium

200

value of equilibrium constant changes with 

Temperature

300

If K is more than 1 which substances are favored, Products or reactants?

Products

400

Increasing surface are will:

a. increases the reaction rate      

b. decreases the reaction rate     

c. might increase or decrease the reaction rate  

d. doesn’t affect the reaction rate

a. increases the reaction rate

500

An equilibrium mixture of SO2, O2, and SO3 gases at 1500 K is determined to consist of 0.344 mol/L SO2, 0.172 mol/L O2, and 0.56 mol/L SO3. What is the equilibrium constant for the system at this temperature? The balanced equation for this reaction is:                                                            

2SO2(g) + O2(g) --> 2SO3(g)

15

4

100

If the pressure on the equilibrium system is increased

2CO(g) + O₂(g) --> 2CO₂(g)

then: 

equilibrium will shift to the right to make more CO₂

200

Decreasing temperature will lead to:

        a. increases the reaction rate  

        b. decreases the reaction rate     

        c. might increase or decrease the reaction rate         d. doesn’t affect the reaction rate

b. decrease the reaction rate

300

Adding a catalyst will:

       a. increases the reaction rate      

       b. decreases the reaction rate     

       c. might increase or decrease the reaction rate  

       d. doesn’t affect the reaction rate

a. increases the reaction rate

400

Consider the reaction represented by the equation Ag₂SO₄(aq) ⇌ 2Ag⁺(aq) + SO₄^2-(aq). 

You can shift the equilibrium to favor the reverse reaction by adding  

common ion 

500

Adding a charged particle common to two solutes decreases solute concentration is known as 

Common ion effect

5

100

DE is -ve 

Exothermic reaction

200

chemical equilibrium expression for the equation 

2A₂B + 3CD --> A₄D + C₃B₂

Keq = [A₄D][C₃B₂] / [A₂B]²[CD]³

300

The activation energy for a reaction is the energy difference between the

reactant and activated complex

400

When sodium acetate, NaCH3COO, is added to the following system

CH₃COOH(aq) + H₂O(l) ⇌ CH₃COO^-(aq) + H₃O⁺(aq)

What will increase and what will decrease

[H3O+] decreases [CH3COOH] increases

500

Reactions run to completion due to

- formation of a gas

- formation of a precipitate

- formation of slightly ionized product