Question 1

Identify the acid in the following reaction, NH3(g)  + H2O( l)  →\rightarrow→  NH4+(aq)  + OH-(aq) ?

Accepted Answer

A)   OH-
B)   NH4+
C)   H2O
D)   NH3

Question 2

Which of the following is a property of bases?

Accepted Answer

A)   feel slippery to the touch
B)   have pH below 7
C)   turn blue litmus red
D)   neutralize substances like NaOH

Question 3

A base is

Accepted Answer

A)   an OH- ion donor
B)   a hydrogen ion donor
C)   a substance like magnesium hydroxide, Mg(OH) 2
D)   both a and c

Question 4

Why is pure water neutral?

Accepted Answer

A)   pure water has no H+ ions and no OH- ions
B)   pure water has equal numbers of H+ ions and OH- ions
C)   pure water has no dissolved carbon dioxide
D)   the pH of pure water at 25 °\degree° is 0

Question 5

What is the pH for a solution with hydrogen ion molarity of 0.01?

Accepted Answer

A)   -2
B)   2
C)   100
D)   10-2

Question 6

Which common substance would have a pH less than 7?

Accepted Answer

A)   milk of magnesia
B)   wine
C)   borax solution
D)   bleach

Question 7

The symbol, M, related to concentration of solution, refers to

Accepted Answer

A)   much meaning a very concentrated solution
B)   molal concentration
C)   moles of solute dissolved in a liter of solution
D)   mixed meaning the solution has been stirred well

Question 8

When H2SO3 dissolves in water, what are the solute particles in the solution?

Accepted Answer

A)   H, S, O
B)   H1+, S1+ and O2-
C)   H1+, HSO3- and SO32-
D)   H21+ and SO32-

Question 9

If 3 moles of a substance are dissolved in 500 mL (0.5 L)  of solution, the molarity of this solution is

Accepted Answer

A)   3 M
B)   1.5 M
C)   3.5 M
D)   6 M

Question 10

What is the molarity of a solution when 15.0 g of NaCl is dissolved to a final volume of 500 mL with water?

Accepted Answer

A)   0.153 M
B)   117 M
C)   0.0300 M
D)   30.0 M

Question 11

Which of the following is true about a solution with pH = 8?

Accepted Answer

A)   the solution is basic
B)   the H+ concentration equals 0.00000001 M
C)   the OH- concentration > H+ concentration
D)   all of these

Question 12

What carries the electrical current in an aqueous NaCl solution?

Accepted Answer

A)   electrons
B)   ions
C)   the solvent - water
D)   none of the above

Question 13

In an acidic solution,

Accepted Answer

A)   [H3O+] is greater than [OH-]
B)   [H3O+] equals [OH-]
C)   [OH-] is greater than [H3O+]
D)   none of these

Question 14

Chemical buffering systems

Accepted Answer

A)   maintain constant pH
B)   consist of a conjugate acid-base pair
C)   absorb added H+ or OH- ions
D)   do all of the above

Exam 9: Acid-Base Reactions

If 3 moles of a substance are dissolved in 500 mL (0.5 L) of solution, the molarity of this solution is

Correct Answer
verified

The symbol, M, related to concentration of solution, refers to

Correct Answer
verified

Which common substance would have a pH less than 7?

Correct Answer
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In an acidic solution,

Correct Answer
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Chemical buffering systems

Correct Answer
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What carries the electrical current in an aqueous NaCl solution?

Correct Answer
verified

What is the molarity of a solution when 15.0 g of NaCl is dissolved to a final volume of 500 mL with water?

Correct Answer
verified

A base is

Correct Answer
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When H₂SO₃ dissolves in water, what are the solute particles in the solution?

Correct Answer
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Which of the following is a property of bases?

Correct Answer
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Which of the following is true about a solution with pH = 8?

Correct Answer
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Why is pure water neutral?

Correct Answer
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What is the pH for a solution with hydrogen ion molarity of 0.01?

Correct Answer
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Identify the acid in the following reaction, NH₃(g) + H₂O( l) $\rightarrow$ NH₄⁺(aq) + OH^-(aq) ?

Correct Answer
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Exam 9: Acid-Base Reactions

If 3 moles of a substance are dissolved in 500 mL (0.5 L) of solution, the molarity of this solution is

Correct AnswerverifiedShow Answer

The symbol, M, related to concentration of solution, refers to

Correct AnswerverifiedShow Answer

Which common substance would have a pH less than 7?

Correct AnswerverifiedShow Answer

In an acidic solution,

Correct AnswerverifiedShow Answer

Chemical buffering systems

Correct AnswerverifiedShow Answer

What carries the electrical current in an aqueous NaCl solution?

Correct AnswerverifiedShow Answer

What is the molarity of a solution when 15.0 g of NaCl is dissolved to a final volume of 500 mL with water?

Correct AnswerverifiedShow Answer

A base is

Correct AnswerverifiedShow Answer

When H2SO3 dissolves in water, what are the solute particles in the solution?

Correct AnswerverifiedShow Answer

Which of the following is a property of bases?

Correct AnswerverifiedShow Answer

Which of the following is true about a solution with pH = 8?

Correct AnswerverifiedShow Answer

Why is pure water neutral?

Correct AnswerverifiedShow Answer

What is the pH for a solution with hydrogen ion molarity of 0.01?

Correct AnswerverifiedShow Answer

Identify the acid in the following reaction, NH3(g) + H2O( l) →\rightarrow→ NH4+(aq) + OH-(aq) ?

Correct AnswerverifiedShow Answer

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When H₂SO₃ dissolves in water, what are the solute particles in the solution?

Correct Answer
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Identify the acid in the following reaction, NH₃(g) + H₂O( l) $\rightarrow$ NH₄⁺(aq) + OH^-(aq) ?

Correct Answer
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