AnswersIA-Chemistry A Survey of Chemistry ALab: Types of Reactions

Lab: Types of Reactions Answers

15 verified answers
1
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Which are examples of equilibrium? Check all that apply.

A
Water drips out of a faucet and down a drain.
B
A person's income and expenses are equal every month.
C
The pressure exerted on the inside of a balloon by the gas inside is equal to the pressure exerted on the outside of the balloon by the atmosphere.
D
The temperature of a metal increases as heat is added to it.
2
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Which are examples of reversible reactions? Check all that apply.

A
Iodine and chlorine can react to form iodine chloride. At equilibrium, the system contains a mixture of iodine, chlorine, and iodine chloride.
B
Sodium hydroxide and hydrochloric acid react readily to form sodium chloride and water. The reverse reaction does not occur.
C
Hydrogen and nitrogen react to form ammonia. At low pressure, the equilibrium system contains all three substances.
3

Which are examples of dynamic equilibrium? Check all that apply.

A
A cooking pot left under a dripping faucet eventually fills with water and overflows.
B
A person's bank account balance remains constant because income and expenses are equal.
C
When a small amount of sugar is added to pure water, the sugar dissolves completely.
D
When humidity is high, the rate at which water evaporates from the surface of a puddle is the same as the rate at which water vapor condenses from the air, so the puddle's size does not change.
E
Sodium moves between many different compounds during chemical reactions on Earth, but the total amount of sodium on Earth is constant.
4

Iodine and chlorine can react according to the following equation:At equilibrium, the concentration of ICl is about ten times higher than the concentrations of I2 or Cl2. Use the drop-down menu to complete each statement.At the beginning of the reaction, the forward reaction rate is the reverse reaction rate.

Question illustration
A
greater than
B
less than
C
equal to
5

At equilibrium, the forward reaction rate is the reverse reaction rate.

A
greater than
B
less than
C
equal to
6

The reaction favors the The equilibrium li

A
reactants.
B
products.
7

es to the

A
left.
B
right.
8

What is the correct equilibrium constant expression for this equation?

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A
Option
Option A
B
Option
Option B
C
Option
Option C
9

What is the correct equilibrium constant expression for this equation?

Question illustration
A
Option
Option A
B
Option
Option B
C
Option
Option C
10

Identify the substances that will appear in the equilibrium constant expression for the equation:Check all that apply.

Question illustration
A
Ag+
B
Zn
C
Zn2+
D
Ag
11

Identify the equilibrium constant expression for the equation:

Question illustration
A
Option
Option A
B
Option
Option B
C
Option
Option C
12

Acetic acid (CH3COOH) reacts with water to form the acetate ion and the hydronium ion:At equilibrium, the concentration of CH3COOH is 2.0 × 10–1 M, the concentration of CH3COO– is 1.9 × 10–3 M, and the concentration of H3O+ is 1.9 × 10–3 M. What is the value of Keq for this reaction?

Question illustration
A
1.8 × 10–5
B
5.5 × 104
C
9.5 × 10–3
D
1.1 × 102
13

Consider the following equilibrium:Which statement about this system is true?

Question illustration
A
At equilibrium, the reactants are favored.
B
At equilibrium, the products are favored.
14

If the equilibrium concentration of CO is 3.4 × 10–1 M, and the equilibrium concentrationof H2 is 6.8 × 10–1 M, the equilibrium concentration of CH3OH is

A
4.1 M.
B
6.0 M.
C
8.9 × 10⁻³ M.
15

Consider the following equilibrium:N2O4(g) 2NO2(g) Keq = 5.85 x 10-3Which statement about this system is true?

Question illustration
A
The equilibrium lies to the left.
B
The equilibrium lies to the right.

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