Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Chemistry - ACIDS AND BASES > Chapter 4.2 - Strength of Acids and Bases > Flashcards

Chapter 4.2 - Strength of Acids and Bases Flashcards

You may prefer our related Brainscape-certified flashcards:
Chemistry 101 flashcards Periodic Table flashcards AP® Chemistry flashcards Organic Chemistry 101 flashcards
1
Q

What is a concentrated Acid or Base?

A

A concentrated Acid or Base contains more moles of solute per litre than a dilute acid or base.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Strong Acid Vs. Weak Acid

A

In the context of acids and bases, the terms ‘strong’ and ‘weak’ refer to the relative tendency to accept or donate protons.

  • Strong acids donate a proton more readily
  • Strong base accepts a proton more readily than a weak base.
  • WEAK acids donate a proton LESS readily
  • WEAK base accepts a proton LESS readily than a weak base.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Acid and bases in relation to their conjugate acids and bases.

A

A STRONG ACID, the WEAKER THE CONJUGATE BASE

STRONG BASE, the WEAKER THE CONJUGATE ACID

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

The arrow signs for acids and bases

A

STRONG ACID AND BASES PRODUCE FORWARD REACTIONS WITH
- ONE ARROW

WEAK ACIDS AND BASES PRODUCE REVERSIBLE REACTIONS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are examples of strong bases?

A 
1. Sodium hydroxide 
NaOH
2. Potassium Hydroxide 
KOH
3. Calcium Hydroxide
Ca(OH)2
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are examples of weak bases?

A

Ammonia

NH3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are examples of Strong acids?

A 
1. Hydrochloric acid 
HCl
2. Sulfuric Acid 
H2SO4
3. Nitric Acid 
HNO3
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are examples of Weak acids?

A 
1. Ethanoic Acid
CH3COOH
2. Carbonic Acid 
H2CO3
3. Phosphoric Acid 
H3PO4
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Strength vs Concentration

A

Strength: The strength of an acid or base refers to how much of the acid or base ions are released in a solution.

Concentration: Concentration refers to the number of moles per volume are contained within the solution. It also applies to how much of the acid or base is contained within the solution.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What determines the strength of an acid?

A

The value of the equilibrium constant for the ionization of an acid in an aqueous solution (Ka) indicates the strength of an acid.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the acidity constant?

A

Ka is the symbol given to the equilibrium constant for hydrolysis reaction in an acid.

This equilibrium constant is called acidity constant.

the further is moves away from 1 = equilbrium not managed well
closer to 1 = equilibrium

further away from one = weak
closer to one = strong
- negative favors reactants
- positive favors the products

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the Ka equation?

A

Ka = [products ] x [products ] / [ reactants]

  • solids and liquids are not included because concentration is virtually constant

the square brackets mean - molar concentration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly

Chemistry - ACIDS AND BASES (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions