Acids and Bases Exit Ticket

Last updated over 1 year ago

14 questions

2

3

2

4

1

2

SECTION A 
The following questions relate to these four solutions:

2

Write a Ka expression for any one acid shown. To do this, click on "show your work" and either use a combination of the text box and pen tools OR write it on paper and use the insert function to insert a photo

2

Write a Kb expression for any one base shown above. To do this, click on "show your work" and either use a combination of the text box and pen tools OR write it on paper and use the insert function to insert a photo

2

SECTION B
Kw at 25 oC is 1 x 10-14

What does the size of the Kw value indicate about water's ability to ionise?

Describe what happens to the Kw of water when the following changes are made:

Kw increases
Kw decreases
Kw remains the same

Temperature is greater than 25 oC
Temperature is less than 25 oC
A small amount of acid is added

SECTION C

Order the following Ka values in order from strongest acid to weakest acid:

1 x 101
1 x 10-5
2 x 10-1
0,8
1 x 10-2

For the following reaction, which of the following is a conjugate acid-base pair?
HC2O4-(aq) + H2O(l) -------->  H3O+(aq) + C2O42–(aq)
The acid is _______________  and its conjugate base is _______________  
The base is ___________ and its conjugate acid is _____________ 

A Brønsted-Lowry base is defined as a substance that

acts as a proton donor

increases [H+] when placed in water

acts as a proton acceptor

decreases [H+] when placed in water

Select the substance(s) which is/are ampholytes

Which of these solution(s) are classified as monoprotic acid(s)?

Write a Kb expression for any one base shown above. To do this, click on "show your work" and either use a combination of the text box and pen tools OR write it on paper and use the insert function to insert a photo

Arrange solutions (A-D) from lowest to highest pH. Click and drag them into correct position.

D
A
C
B

Consider solution A:
What is the concentration of hydronium ions?

1 x 10-12 mol.dm-3

0,02 mol.dm-3

1 x 10-14 mol.dm-3

1 x 10-2 mol.dm-3

Consider solution A:
What is the concentration of hydroxide ions?

1 x 10-12 mol.dm-3

1 x 10-2 mol.dm-3

0,02 mol.dm-3

1 x 10-14 mol.dm-3

Consider solution A:
What is the pH?

Describe what happens to the Kw of water when the following changes are made:

Kw increases

Kw decreases

Kw remains the same

Temperature is greater than 25 oC

Temperature is less than 25 oC

A small amount of acid is added

Order the following Ka values in order from strongest acid to weakest acid:

1 x 101

1 x 10-5

2 x 10-1

0,8

1 x 10-2

For the following reaction, which of the following is a conjugate acid-base pair?
HC2O4-(aq) + H2O(l) -------->  H3O+(aq) + C2O42–(aq)
The acid is _______________  and its conjugate base is _______________  
The base is ___________ and its conjugate acid is _____________ 

H3O+(aq)

H2O(l)

HC2O4-(aq)

C2O42-(aq)

For the following reaction, which of the following is a conjugate acid-base pair?
H2PO4-(aq) + NH3 (aq) ------->  HPO42- (aq) + NH4+(aq)
The acid is _______________  and its conjugate base is ___________  
The base is ____________ and its conjugate acid is _____________ 

HPO42-

H2PO4-(aq)

NH4+(aq)

NH3(aq)

A Brønsted-Lowry base is defined as a substance that

acts as a proton donor

increases [H+] when placed in water

acts as a proton acceptor

decreases [H+] when placed in water

Select the substance(s) which is/are ampholytes

H2CO3

H3O+

H2O

NH3

HSO4-

CH3COO-

Which of these solution(s) are classified as monoprotic acid(s)?

A

B

C

D

none

Arrange solutions (A-D) from lowest to highest pH. Click and drag them into correct position.

D

A

C

B

Consider solution A: 
What is the concentration of hydronium ions?

1 x 10-12 mol.dm-3

0,02 mol.dm-3

1 x 10-14 mol.dm-3

1 x 10-2 mol.dm-3

Consider solution A:
What is the concentration of hydroxide ions?

1 x 10-12 mol.dm-3

1 x 10-2 mol.dm-3

0,02 mol.dm-3

1 x 10-14 mol.dm-3

Consider solution A:
What is the pH?

1

2

5

3

4

Acids and Bases Exit Ticket

Acids and Bases Exit Ticket

SECTION A

Write a Ka expression for any one acid shown. To do this, click on "show your work" and either use a combination of the text box and pen tools OR write it on paper and use the insert function to insert a photo

SECTION B

What does the size of the Kw value indicate about water's ability to ionise?

SECTION C

SECTION A

Write a Ka expression for any one acid shown. To do this, click on "show your work" and either use a combination of the text box and pen tools OR write it on paper and use the insert function to insert a photo

Write a Kb expression for any one base shown above. To do this, click on "show your work" and either use a combination of the text box and pen tools OR write it on paper and use the insert function to insert a photo

SECTION B

What does the size of the Kw value indicate about water's ability to ionise?

Describe what happens to the Kw of water when the following changes are made:

SECTION C

Order the following Ka values in order from strongest acid to weakest acid:

A Brønsted-Lowry base is defined as a substance that

Select the substance(s) which is/are ampholytes

Which of these solution(s) are classified as monoprotic acid(s)?

Write a Kb expression for any one base shown above. To do this, click on "show your work" and either use a combination of the text box and pen tools OR write it on paper and use the insert function to insert a photo

Arrange solutions (A-D) from lowest to highest pH. Click and drag them into correct position.

Consider solution A: What is the concentration of hydronium ions?

Consider solution A:What is the concentration of hydroxide ions?

Consider solution A:What is the pH?

Consider solution A:
What is the concentration of hydronium ions?

Consider solution A:
What is the concentration of hydroxide ions?

Consider solution A:
What is the pH?