Question 1

In the reaction, HSO4
4  , the conjugate acid-base pairs are  A) HSO − and SO 2−; H O and OH−.4 4 2   B) HSO4− and H3O+; SO42 − and OH−. C) HSO4− and OH−; SO42 − and H2O. D) HSO4− and H2O; OH − and SO42−. E) HSO4− and OH−; SO42 − and H3O+." class="answers-bank-image d-inline" rel="preload" >, the conjugate acid-base pairs are

Accepted Answer

A)  HSO − and SO 2−; H O and OH−.4 42 4  , the conjugate acid-base pairs are  
A)  HSO − and SO 2−; H O and OH−.4 4 2   
B)  HSO4− and H3O+; SO42 − and OH−. 
C)  HSO4− and OH−; SO42 − and H2O. 
D)  HSO4− and H2O; OH − and SO42−. 
E)  HSO4− and OH−; SO42 − and H3O+." class="answers-bank-image d-inline" rel="preload" >
B)  HSO4− and H3O+; SO42 − and OH−.
C)  HSO4− and OH−; SO42 − and H2O.
D)  HSO4− and H2O; OH − and SO42−.
E)  HSO4− and OH−; SO42 − and H3O+.F) A) and B)
G) B) and E)

Question 2

Which one of these salts will form a basic solution upon dissolving in water?

Accepted Answer

A)  NaCl
B)  NaNO2
C)  NH4NO3
D)  KBr
E)  AlCl3F) C) and D)
G) A) and D)

Question 3

Which one of the following is a strong acid?

Accepted Answer

A)  CH3COOH
B)  H2SO3
C)  NH3
D)  H3PO4
E)  HClO3F) All of the above
G) A) and C)

Question 4

Identify the major ions present in an aqueous HNO3 solution.

Accepted Answer

A)  HN2+, O2−
B)  OH−, NO3−
C)  OH−, NO+
D)  H+, N3−, O2−
E)  H+, NO3−F) A) and D)
G) D) and E)

Question 5

A standard solution of 0.243 M NaOH was used to determine the concentration of a hydrochloric acid solution.If 46.33 mL of NaOH is needed to neutralize 10.00 mL of the acid, what is the molar concentration of the acid in the original solution?

Accepted Answer

A)  0.243 M
B)  0.200 M
C)  1.13 M
D)  0.563 M
E)  0.0313 MF) A) and D)
G) C) and D)

Question 6

Which one of these responses is with regard to a 0.1 M solution of a weak acid HA?

Accepted Answer

A)  [H+] > 0.1 M.
B)  pH = 1.0
C)  [H+] -]
D)  pH > 1.0
E)  [OH-] > [H+]F) B) and E)
G) C) and E)

Question 7

Which is the net ionic equation for the reaction between aqueous solutions of lithium hydroxide and hydrobromic acid? LiOH(aq)  + HBr(aq)  → H2O(l)  + LiBr(aq)

Accepted Answer

A)  LiOH(aq)  → Li+(aq)  + OH−(aq) 
B)  HBr(aq)  → H+(aq)  + Br−(aq) 
C)  H+(aq)  + OH−(aq)  → H2O(l) 
D)  Li+(aq)  + Br−(aq)  → LiBr(aq) 
E)  Li+(aq)  + OH−(aq) + H+(aq)  + Br−(aq)  → H2O(l)  + LiBr(aq) F) C) and D)
G) A) and D)

Question 8

What is the concentration of H+ in a 0.025 M HCl solution?

Accepted Answer

A)  0
B)  0.013 M
C)  0.025 M
D)  0.050 M
E)  0.010 MF) B) and D)
G) A) and B)

Question 9

What is the name of a proton donor in an acid-base reaction?

Accepted Answer

A)  Arrhenius acid
B)  Arrhenius base
C)  Brønsted acid
D)  Brønsted base
E)  Lewis baseF) All of the above
G) A) and B)

Question 10

Which pair of substances is capable of forming a buffer in aqueous solution?

Accepted Answer

A)  H3PO4, Na3PO3
B)  HNO3, NaNO3
C)  HCl, NaCl
D)  H2CO3, NaNO2
E)  CH3COOH, CH3COONaF) B) and E)
G) A) and B)

Question 11

Complete the following reaction and identify the Brønsted base: NaOH(aq)  + HCl(aq)  →

Accepted Answer

A)  Na(aq)  + HOCl(aq) ; NaOH is the base.
B)  NaCl(aq)  + OH−(aq) ; HCl is the base.
C)  NaCl(aq)  + OH−(aq) ; NaOH is the base.
D)  H2O(l)  + NaCl(aq) ; HCl is the base.
E)  NaCl(aq) + H2O(l) ; NaOH is the base.F) A) and B)
G) A) and E)

Question 12

Identify the conjugate base of HPO42− in the reaction HCO3− + HPO42−    42− in the reaction HCO3− + HPO42−      H2CO3 + PO43− A) H2O B) HCO3− C) H2CO3 D) PO43− E) None of these" class="answers-bank-image d-inline" rel="preload" > H2CO3 + PO43−

Accepted Answer

A)  H2O
B)  HCO3−
C)  H2CO3
D)  PO43−
E)  None of theseF) A) and B)
G) C) and E)

Question 13

What is the name given to a substance that can act as a Brønsted acid or as a Brønsted base according to what it is reacting with?

Accepted Answer

A)  hydrophilic
B)  hydrophobic
C)  amphoteric
D)  isoprotic
E)  isoelectronicF) B) and D)
G) C) and E)

Question 14

Vinegar is a solution of acetic acid, HC2H3O2 , dissolved in water.A 5.54-g sample of vinegar was neutralized by 30.10 mL of 0.100 M NaOH.What is the percent by weight of acetic acid in the vinegar?

Accepted Answer

A)  0.0543%
B)  1.08%
C)  3.26%
D)  5.43%
E)  9.23%F) All of the above
G) D) and E)

Question 15

What is the pOH of a 0.025 M HI solution?

Accepted Answer

A)  0.025
B)  0.94
C)  1.60
D)  12.40
E)  10.31F) C) and D)
G) A) and B)

Question 16

What is the conjugate acid of CO32− in the reaction below? CO32− + HSO4−    32− in the reaction below? CO32− + HSO4−      HCO3− + SO42− A) HCO3− B) HSO4− C) OH− D) H3O+ E) SO42−" class="answers-bank-image d-inline" rel="preload" > HCO3− + SO42−

Accepted Answer

A)  HCO3−
B)  HSO4−
C)  OH−
D)  H3O+
E)  SO42−F) A) and E)
G) A) and D)

Question 17

What is the name of a proton acceptor in an acid-base reaction?

Accepted Answer

A)  Arrhenius acid
B)  Arrhenius base
C)  Brønsted acid
D)  Brønsted base
E)  Lewis baseF) B) and C)
G) A) and D)

Question 18

What is the pH of a solution in which [H+] is 1.22 × 10−4 M?

Accepted Answer

A)  −3.914
B)  1.220
C)  3.914
D)  4.000
E)  4.086F) A) and E)
G) All of the above

Question 19

A 34.62-mL of 0.1510 M NaOH was needed to neutralize 50.0 mL of an H2SO4 solution.What is the concentration of the original sulfuric acid solution?

Accepted Answer

A)  0.0229 M
B)  0.218 M
C)  0.0523 M
D)  0.209 M
E)  0.105 MF) B) and C)
G) A) and B)

Question 20

What is the concentration of OH− in a 0.083 M NaOH solution?

Accepted Answer

A)  0.083 M
B)  1.21 × 10−13 M
C)  8.30 × 10−16 M
D)  7 M
E)  8.30 × 1012 MF) C) and D)
G) A) and C)

Exam 12: Acids and Bases

What is the pOH of a 0.025 M HI solution?

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What is the conjugate acid of CO32− in the reaction below? CO32− + HSO4− HCO3− + SO42−

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A standard solution of 0.243 M NaOH was used to determine the concentration of a hydrochloric acid solution.If 46.33 mL of NaOH is needed to neutralize 10.00 mL of the acid, what is the molar concentration of the acid in the original solution?

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Which one of these salts will form a basic solution upon dissolving in water?

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A 34.62-mL of 0.1510 M NaOH was needed to neutralize 50.0 mL of an H2SO4 solution.What is the concentration of the original sulfuric acid solution?

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Vinegar is a solution of acetic acid, HC2H3O2 , dissolved in water.A 5.54-g sample of vinegar was neutralized by 30.10 mL of 0.100 M NaOH.What is the percent by weight of acetic acid in the vinegar?

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Which one of these responses is with regard to a 0.1 M solution of a weak acid HA?

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What is the name of a proton acceptor in an acid-base reaction?

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Complete the following reaction and identify the Brønsted base: NaOH(aq) + HCl(aq) →

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What is the name given to a substance that can act as a Brønsted acid or as a Brønsted base according to what it is reacting with?

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Which pair of substances is capable of forming a buffer in aqueous solution?

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What is the concentration of H+ in a 0.025 M HCl solution?

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What is the pH of a solution in which [H+] is 1.22 × 10−4 M?

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In the reaction, HSO4 , the conjugate acid-base pairs are

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What is the name of a proton donor in an acid-base reaction?

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What is the concentration of OH− in a 0.083 M NaOH solution?

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Identify the conjugate base of HPO42− in the reaction HCO3− + HPO42− H2CO3 + PO43−

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Which is the net ionic equation for the reaction between aqueous solutions of lithium hydroxide and hydrobromic acid? LiOH(aq) + HBr(aq) → H2O(l) + LiBr(aq)

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Which one of the following is a strong acid?

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Identify the major ions present in an aqueous HNO3 solution.

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What is the conjugate acid of CO₃²⁻ in the reaction below? CO₃²⁻ + HSO₄⁻ HCO₃⁻ + SO₄²⁻

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A 34.62-mL of 0.1510 M NaOH was needed to neutralize 50.0 mL of an H₂SO₄ solution.What is the concentration of the original sulfuric acid solution?

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Vinegar is a solution of acetic acid, HC₂H₃O₂ , dissolved in water.A 5.54-g sample of vinegar was neutralized by 30.10 mL of 0.100 M NaOH.What is the percent by weight of acetic acid in the vinegar?

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What is the concentration of H⁺ in a 0.025 M HCl solution?

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What is the pH of a solution in which [H⁺] is 1.22 × 10⁻⁴ M?

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In the reaction, HSO₄ , the conjugate acid-base pairs are

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What is the concentration of OH⁻ in a 0.083 M NaOH solution?

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Identify the conjugate base of HPO₄²⁻ in the reaction HCO₃⁻ + HPO₄²⁻ H₂CO₃ + PO₄³⁻

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Which is the net ionic equation for the reaction between aqueous solutions of lithium hydroxide and hydrobromic acid? LiOH(aq) + HBr(aq) → H₂O(l) + LiBr(aq)

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Identify the major ions present in an aqueous HNO₃ solution.

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