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Exam 14: Acids and Bases

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Question 31

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Which of the following is an example of an Arrhenius acid?

A) HCl(aq)
B) HNO₃(aq)
C) H₂SO₄(aq)
D) all of the above
E) none of the above

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Question 32

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In the following reaction,which reactant is a Brønsted-Lowry base? H₂CO₃(aq) + Na₂HPO₄(aq) → NaHCO₃(aq) + NaH₂PO₄(aq)

A) H₂CO₃
B) Na₂HPO₄
C) NaH₂PO₄
D) NaHCO₃
E) none of the above

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Question 33

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Which of the following is true if the pH of a solution increases from 2 to 5?

What acid and base are neutralized to give potassium nitrate salt?

In the following reaction,which reactant is a Brønsted-Lowry base? NaHCO₃(aq) + NaH₂PO₄(aq) → Na₂HPO₄(aq) + H₂CO₃(aq)

What is the term used as a synonym for hydrogen ion acceptor?

What is the pH of an aqueous solution if the [H+] = 0.000 001 M?

What is the color of methyl red indicator at pH 5,the midpoint at which red and yellow are in equal concentration?

In the following reaction,which reactant is a Brønsted-Lowry base? HCl(aq) + KHS(aq) → KCl(aq) + H₂S(aq)

If a 25.0 mL sample of sulfuric acid is titrated with 50.0 mL of 0.200 M potassium hydroxide to a phenolphthalein endpoint,what is the molarity of the acid? H₂SO₄(aq) + 2 KOH(aq) → k₂SO₄(aq) + 2 H₂O(l)

What is the term for a substance that accepts a proton in an acid-base reaction?

What classic paper established the concept of ions in aqueous solutions?

Which of the following is a strong acid?

If a 50.0 mL sample of ammonium hydroxide is titrated with 25.0 mL of 0.200 M sulfuric acid to a methyl red endpoint,what is the molarity of the base? 2 NH₄OH(aq) + H₂SO₄(aq) → (NH₄) 2SO₄(aq) + 2 H₂O(l)

If 20.0 mL of 0.200 M H₂SO₄ is titrated with 0.100 M NaOH,what volume of sodium hydroxide is required to neutralize the acid? H₂SO₄(aq) + 2 NaOH(aq) → Na₂SO₄(aq) + 2 H₂O(l)

Proline is an amino acid that can be abbreviated HPro.If 33.55 mL of 0.150 M NaOH neutralizes 0.579 g of HPro,what is the molar mass of proline? HPro(aq) + NaOH(aq) → NaPro(aq) + H₂O(l)

Which of the following is a weak base?

In the following reaction,which reactant is a Brønsted-Lowry base? Na₂HPO₄(aq) + H₂CO₃(aq) → NaH₂PO₄(aq) + NaHCO₃(aq)

What is the term for a substance capable of either donating or accepting a proton in an acid-base reaction?

Lactic acid is found in sour milk and can be abbreviated HLac.If 47.50 mL of 0.275 M NaOH neutralizes 1.180 g of HLac,what is the molar mass of lactic acid? HLac(aq) + NaOH(aq) → NaLac(aq) + H₂O(l)