Question 1

In the following reaction
SO2(g)+ H2O(l)F1F1F1S1F1F1F10 H2SO3(aq),
identify the Lewis acid and base.

Accepted Answer

Lewis acid

Question 2

The Ka of phenol is 1.3 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F1010.For a solution labeled "1.0 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F103 M aqueous phenol,"

Accepted Answer

A) [H3O+] = [H3O+]2/[phenol]initial. 
B) [H3O+] initial. 
C) [H3O+] > 10F1F1F1S1F1F1F106. 
D) pH ~ 4. 
E) Kw/[H3O+] >> [phenol]initial. 
A) [H3O+] = [H3O+]2/[phenol]initial. 
B) [H3O+] initial. 
C) [H3O+] > 10F1F1F1S1F1F1F106. 
D) pH ~ 4. 
E) Kw/[H3O+] >> [phenol]initial.

Question 3

Of the following,which does not have an amphoteric oxide?

Accepted Answer

A) BeO 
B) PbO 
C) SnO 
D) Al2O3 
E) MgO 
A) BeO 
B) PbO 
C) SnO 
D) Al2O3 
E) MgO

Question 4

In a solution labeled "0.10 M HNO3," which of the following is correct?

Accepted Answer

A) [HNO3] = 0.10 M 
B) [H3O+] = 0.10 M, [NO3F1F1F1S1F1F1F10] = 0.10 M 
C) [H3O+] = 0.090 M, [NO3F1F1F1S1F1F1F10] = 0.010 M 
D) [HNO3] = 0.050 M, [H3O+] = 0.050 M, [NO3F1F1F1S1F1F1F10] = 0.050 M 
E) [H3O+] = 0.10 M, [OHF1F1F1S1F1F1F10] = 1.0 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F107 M 
A) [HNO3] = 0.10 M 
B) [H3O+] = 0.10 M, [NO3F1F1F1S1F1F1F10] = 0.10 M 
C) [H3O+] = 0.090 M, [NO3F1F1F1S1F1F1F10] = 0.010 M 
D) [HNO3] = 0.050 M, [H3O+] = 0.050 M, [NO3F1F1F1S1F1F1F10] = 0.050 M 
E) [H3O+] = 0.10 M, [OHF1F1F1S1F1F1F10] = 1.0 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F107 M

Question 5

For the following acids,which has the highest pKa?

Accepted Answer

A) HIO 
B) HClO3  
C) HClO 
D) HBrO 
E) HClO4  
A) HIO 
B) HClO3  
C) HClO 
D) HBrO 
E) HClO4

Question 6

Which of the following produces the strongest conjugate base?

Accepted Answer

A) HF (pKa = 3.45) 
B) HClO (pKa = 7.53) 
C) HCOOH (pKa = 3.75) 
D) CH3COOH (pKa = 4.75) 
E) HIO (pKa = 10.64) 
A) HF (pKa = 3.45) 
B) HClO (pKa = 7.53) 
C) HCOOH (pKa = 3.75) 
D) CH3COOH (pKa = 4.75) 
E) HIO (pKa = 10.64)

Question 7

For a solution of phosphoric acid,write the equation for F1F1F1S1F1F1F10(HPO42F1F1F1S1F1F1F10).

Accepted Answer

A) Ka3/([H3O+]3 + Ka1[H3O+]2 + Ka1Ka2[H3O+] + Ka1Ka2Ka3) 
B) [H3O+]/([H3O+]3 + Ka1[H3O+]2 + Ka1Ka2[H3O+] + Ka1Ka2Ka3) 
C) Ka1Ka2[H3O+]/([H3O+]3 + Ka1[H3O+]2 + Ka1Ka2[H3O+] + Ka1Ka2Ka3) 
D) Ka1Ka2Ka3/([H3O+]3 + Ka1[H3O+]2 + Ka1Ka2[H3O+] + Ka1Ka2Ka3) 
E) Ka1[H3O+]2/([H3O+]3 + Ka1[H3O+]2 + Ka1Ka2[H3O+] + Ka1Ka2Ka3) 
A) Ka3/([H3O+]3 + Ka1[H3O+]2 + Ka1Ka2[H3O+] + Ka1Ka2Ka3) 
B) [H3O+]/([H3O+]3 + Ka1[H3O+]2 + Ka1Ka2[H3O+] + Ka1Ka2Ka3) 
C) Ka1Ka2[H3O+]/([H3O+]3 + Ka1[H3O+]2 + Ka1Ka2[H3O+] + Ka1Ka2Ka3) 
D) Ka1Ka2Ka3/([H3O+]3 + Ka1[H3O+]2 + Ka1Ka2[H3O+] + Ka1Ka2Ka3) 
E) Ka1[H3O+]2/([H3O+]3 + Ka1[H3O+]2 + Ka1Ka2[H3O+] + Ka1Ka2Ka3)

Question 8

What is the conjugate acid of O2F1F1F1S1F1F1F10?

Accepted Answer

Question 9

True or false: the pH of 0.10 M and 0.40 M NaHCO3(aq)solutions is 8.31 for both?

Accepted Answer

A) True 
 B)False

Question 10

If the pKa of acetic acid is 4.75,the pKa of CH3CH2OH is

Accepted Answer

A) about 4. 
B) much less than 4.75. 
C) about 16. 
D) also 4.75. 
E) about 7. 
A) about 4. 
B) much less than 4.75. 
C) about 16. 
D) also 4.75. 
E) about 7.

Question 11

What is the pKa of the conjugate acid of hydrazine,given that the pKb of hydrazine is 5.77? Write the formula of the conjugate acid of hydrazine.

Accepted Answer

Question 12

The fractional composition diagram for the amino acid alanine is shown below.   What do the two points represent where alpha is 0.5?

Accepted Answer

The answer of The fractional composition diagram for the amino...

Question 13

If F1F1F1S1F1F1F10(HSO3F1F1F1S1F1F1F10)= 0.83 at pH 2.5,what are F1F1F1S1F1F1F10(H2SO3)and F1F1F1S1F1F1F10(SO32F1F1F1S1F1F1F10)at this pH? For H2SO3,pKa1 and pKa2 are 1.81 and 6.91,respectively.

Accepted Answer

A) (F1F1F1S1F1F1F10(H2SO3)~ 0 and F1F1F1S1F1F1F10(SO32F1F1F1S1F1F1F10)= 0.17) 
B) (F1F1F1S1F1F1F10(H2SO3)= 0.415 and F1F1F1S1F1F1F10(SO32F1F1F1S1F1F1F10)~ 0) 
C) (F1F1F1S1F1F1F10(H2SO3)= 0.0.085 and F1F1F1S1F1F1F10(SO32F1F1F1S1F1F1F10)= 0.085) 
D) (F1F1F1S1F1F1F10(H2SO3)= 0.17 and F1F1F1S1F1F1F10(SO32F1F1F1S1F1F1F10)~ 0) 
E) (F1F1F1S1F1F1F10(H2SO3)= 0.17 and F1F1F1S1F1F1F10(SO32F1F1F1S1F1F1F10)~ 1) 
A) (F1F1F1S1F1F1F10(H2SO3)~ 0 and F1F1F1S1F1F1F10(SO32F1F1F1S1F1F1F10)= 0.17) 
B) (F1F1F1S1F1F1F10(H2SO3)= 0.415 and F1F1F1S1F1F1F10(SO32F1F1F1S1F1F1F10)~ 0) 
C) (F1F1F1S1F1F1F10(H2SO3)= 0.0.085 and F1F1F1S1F1F1F10(SO32F1F1F1S1F1F1F10)= 0.085) 
D) (F1F1F1S1F1F1F10(H2SO3)= 0.17 and F1F1F1S1F1F1F10(SO32F1F1F1S1F1F1F10)~ 0) 
E) (F1F1F1S1F1F1F10(H2SO3)= 0.17 and F1F1F1S1F1F1F10(SO32F1F1F1S1F1F1F10)~ 1)

Question 14

Write the charge balance equation for a dilute aqueous solution of KOH.

Accepted Answer

A) [KOH]initial = [K+] 
B) [OHF1F1F1S1F1F1F10] = [H3O+] + [K+] 
C) [H3O+] = [OHF1F1F1S1F1F1F10] 
D) [K+] = [OHF1F1F1S1F1F1F10] + [H3O+] 
E) [OHF1F1F1S1F1F1F10] = [K+] 
A) [KOH]initial = [K+] 
B) [OHF1F1F1S1F1F1F10] = [H3O+] + [K+] 
C) [H3O+] = [OHF1F1F1S1F1F1F10] 
D) [K+] = [OHF1F1F1S1F1F1F10] + [H3O+] 
E) [OHF1F1F1S1F1F1F10] = [K+]

Question 15

Estimate the pH of 10F1F1F1S1F1F1F107 M KOH(aq).

Accepted Answer

A) 6.9 
B) 9 
C) 13 
D) 7.2 
E) 7.0 
A) 6.9 
B) 9 
C) 13 
D) 7.2 
E) 7.0

Question 16

The conjugate base of OHF1F1F1S1F1F1F10 is

Accepted Answer

A) H+. 
B) OHF1F1F1S1F1F1F10. 
C) O2F1F1F1S1F1F1F10. 
D) H3O+. 
E) H2O. 
A) H+. 
B) OHF1F1F1S1F1F1F10. 
C) O2F1F1F1S1F1F1F10. 
D) H3O+. 
E) H2O.

Question 17

Calculate the hydrogen ion concentration for an aqueous solution that has a pH of 3.45.

Accepted Answer

A) 0.54 M 
B) 3.5 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F104 M 
C) 2.8 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F1011  
D) 3.2 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F102 M 
E) 1.22 M 
A) 0.54 M 
B) 3.5 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F104 M 
C) 2.8 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F1011  
D) 3.2 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F102 M 
E) 1.22 M

Question 18

The Ka of phenol is 1.3 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F1010.For a solution labeled "1.0 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F103 M aqueous phenol,"

Accepted Answer

A) Kw/[H3O+] >> [phenol]initial. 
B) Kw/[H3O+] initial. 
C) [H3O+] > 10F1F1F1S1F1F1F106. 
D) pH ~ 4. 
E) [H3O+] = [H3O+]2/[phenol]initial. 
A) Kw/[H3O+] >> [phenol]initial. 
B) Kw/[H3O+] initial. 
C) [H3O+] > 10F1F1F1S1F1F1F106. 
D) pH ~ 4. 
E) [H3O+] = [H3O+]2/[phenol]initial.

Question 19

The conjugate acid of HPO42F1F1F1S1F1F1F10 is

Accepted Answer

A) HPO42F1F1F1S1F1F1F10. 
B) PO43F1F1F1S1F1F1F10. 
C) H2PO4F1F1F1S1F1F1F10. 
D) H3O+. 
E) H3PO4. 
A) HPO42F1F1F1S1F1F1F10. 
B) PO43F1F1F1S1F1F1F10. 
C) H2PO4F1F1F1S1F1F1F10. 
D) H3O+. 
E) H3PO4.

Question 20

Write the charge balance equation for a dilute aqueous solution of HI.

Accepted Answer

A) [IF1F1F1S1F1F1F10] = [OHF1F1F1S1F1F1F10] + [H3O+] 
B) [H3O+] = [OHF1F1F1S1F1F1F10] 
C) [H3O+] = [IF1F1F1S1F1F1F10] 
D) [H3O+] = [IF1F1F1S1F1F1F10] + [OHF1F1F1S1F1F1F10] 
E) [HI]initial = [IF1F1F1S1F1F1F10] 
A) [IF1F1F1S1F1F1F10] = [OHF1F1F1S1F1F1F10] + [H3O+] 
B) [H3O+] = [OHF1F1F1S1F1F1F10] 
C) [H3O+] = [IF1F1F1S1F1F1F10] 
D) [H3O+] = [IF1F1F1S1F1F1F10] + [OHF1F1F1S1F1F1F10] 
E) [HI]initial = [IF1F1F1S1F1F1F10]

In the following reaction SO₂(g)+ H₂O(l) H₂SO₃(aq), identify the Lewis acid and base.

The K_a of phenol is 1.3  10^¹⁰.For a solution labeled "1.0  10^³ M aqueous phenol,"

Of the following,which does not have an amphoteric oxide?

In a solution labeled "0.10 M HNO₃," which of the following is correct?

For the following acids,which has the highest pK_a?

Which of the following produces the strongest conjugate base?

For a solution of phosphoric acid,write the equation for (HPO₄²^).

What is the conjugate acid of O²^?

True or false: the pH of 0.10 M and 0.40 M NaHCO₃(aq)solutions is 8.31 for both?

If the pK_a of acetic acid is 4.75,the pK_a of CH₃CH₂OH is

What is the pK_a of the conjugate acid of hydrazine,given that the pK_b of hydrazine is 5.77? Write the formula of the conjugate acid of hydrazine.

The fractional composition diagram for the amino acid alanine is shown below. $The fractional composition diagram for the amino acid alanine is shown below. What do the two points represent where alpha is 0.5?$ What do the two points represent where alpha is 0.5?

If (HSO₃^)= 0.83 at pH 2.5,what are (H₂SO₃)and (SO₃²^)at this pH? For H₂SO₃,pK_a1 and pK_a2 are 1.81 and 6.91,respectively.

Write the charge balance equation for a dilute aqueous solution of KOH.

Estimate the pH of 10^⁷ M KOH(aq).

The conjugate base of OH^ is

Calculate the hydrogen ion concentration for an aqueous solution that has a pH of 3.45.

The K_a of phenol is 1.3  10^¹⁰.For a solution labeled "1.0  10^³ M aqueous phenol,"

The conjugate acid of HPO₄²^ is

Write the charge balance equation for a dilute aqueous solution of HI.

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Exam 12: Acids and Bases

In the following reaction SO2(g)+ H2O(l) H2SO3(aq), identify the Lewis acid and base.

The Ka of phenol is 1.3  1010.For a solution labeled "1.0  103 M aqueous phenol,"

Of the following,which does not have an amphoteric oxide?

In a solution labeled "0.10 M HNO3," which of the following is correct?

For the following acids,which has the highest pKa?

Which of the following produces the strongest conjugate base?

For a solution of phosphoric acid,write the equation for (HPO42).

What is the conjugate acid of O2?

True or false: the pH of 0.10 M and 0.40 M NaHCO3(aq)solutions is 8.31 for both?

If the pKa of acetic acid is 4.75,the pKa of CH3CH2OH is

What is the pKa of the conjugate acid of hydrazine,given that the pKb of hydrazine is 5.77? Write the formula of the conjugate acid of hydrazine.

The fractional composition diagram for the amino acid alanine is shown below. What do the two points represent where alpha is 0.5?

If (HSO3)= 0.83 at pH 2.5,what are (H2SO3)and (SO32)at this pH? For H2SO3,pKa1 and pKa2 are 1.81 and 6.91,respectively.

Write the charge balance equation for a dilute aqueous solution of KOH.

Estimate the pH of 107 M KOH(aq).

The conjugate base of OH is

Calculate the hydrogen ion concentration for an aqueous solution that has a pH of 3.45.

The Ka of phenol is 1.3  1010.For a solution labeled "1.0  103 M aqueous phenol,"

The conjugate acid of HPO42 is

Write the charge balance equation for a dilute aqueous solution of HI.

The Quantum World

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Chemical Bonds

Molecular Shape and Structure

The Properties of Gases

Liquids and Solids

Inorganic Materials

Thermodynamics: the First Law

Thermodynamics: the Second and Third Laws

Physical Equilibria

Chemical Equilibria

Aqueous Equilibria

Electrochemistry

Chemical Kinetics

The Elements: the Main Group Elements

The Elements: the D Block

Nuclear Chemistry

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In the following reaction SO₂(g)+ H₂O(l) H₂SO₃(aq), identify the Lewis acid and base.

The K_a of phenol is 1.3  10^¹⁰.For a solution labeled "1.0  10^³ M aqueous phenol,"

In a solution labeled "0.10 M HNO₃," which of the following is correct?

For the following acids,which has the highest pK_a?

For a solution of phosphoric acid,write the equation for (HPO₄²^).

What is the conjugate acid of O²^?

True or false: the pH of 0.10 M and 0.40 M NaHCO₃(aq)solutions is 8.31 for both?

If the pK_a of acetic acid is 4.75,the pK_a of CH₃CH₂OH is

What is the pK_a of the conjugate acid of hydrazine,given that the pK_b of hydrazine is 5.77? Write the formula of the conjugate acid of hydrazine.

The fractional composition diagram for the amino acid alanine is shown below. $The fractional composition diagram for the amino acid alanine is shown below. What do the two points represent where alpha is 0.5?$ What do the two points represent where alpha is 0.5?

If (HSO₃^)= 0.83 at pH 2.5,what are (H₂SO₃)and (SO₃²^)at this pH? For H₂SO₃,pK_a1 and pK_a2 are 1.81 and 6.91,respectively.

Estimate the pH of 10^⁷ M KOH(aq).

The conjugate base of OH^ is

The K_a of phenol is 1.3  10^¹⁰.For a solution labeled "1.0  10^³ M aqueous phenol,"

The conjugate acid of HPO₄²^ is