Lab: Measuring pH — Unit test Answers
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Which of these correctly defines the pH of a solution?
A
the negative log of the hydronium ion concentrationB
the log of the hydronium ion concentrationC
the negative log of the hydroxide ion concentrationD
the log of the hydroxide ion concentration22
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A chemist lectures about the following definition for acids and bases.The acid-base behavior is analyzed in terms of how electrons are transferred between compounds rather than in terms of how hydrogen ions are transferred.What is the chemist defining?
A
the Arrhenius concept of acids and basesB
the classical concept of acids and basesC
the Lewis concept of acids and basesD
the Bronsted-Lowry concept of acids and bases23
What is the net ionic equation for the reaction that is represented by the following total ionic equation?
A
2 upper N a subscript 3 upper P upper O subscript 4 plus 3 upper C a upper C l subscript 2 right arrow 6 upper N a upper C l plus upper C a subscript 3 (upper P upper O subscript 4) subscript 2.
B
2 upper P upper O subscript 4 superscript 3 minus, plus 3 upper C a superscript 2 plus right arrow upper C a subscript 3 (upper P upper O subscript 4) subscript 2.
C
2 upper P upper O subscript 4 superscript 3 minus, plus 3 upper C a superscript 2 plus, plus 6 upper C l superscript minus right arrow 6 upper N a superscript plus, upper C a subscript 3 (upper P upper O subscript 4) subscript 2.
D
2 upper P superscript 5 plus, plus 8 upper O superscript 2 minus, plus 3 upper C a superscript 2 plus right arrow upper C a subscript 3 (upper P upper O subscript 4) subscript 2.
24
Which compound plays an important role in leather processing and electroplating?
A
nitric acidB
hydrochloric acidC
ammoniaD
magnesium hydroxide25
Which equation represents the correct net ionic equation for the reaction between Ca(OH)2 and H2SO4?
A
Upper H superscript plus, plus upper O upper H superscript minus right arrow upper H subscript 2 upper O.
B
2 upper H superscript plus, plus 2 upper O upper H superscript minus right arrow upper H subscript 2 upper O.
C
Upper C a superscript 2 plus, plus 2 upper O upper H superscript minus, plus upper S upper O subscript 4 superscript 2 minus right arrow upper C a superscript 2 plus, plus upper S upper O subscript 4 superscript 2 minus, plus 2 upper H subscript 2 upper O.
D
Upper C a (upper O upper H) subscript 2 plus upper H subscript 2 upper S upper O subscript 4 right arrow upper C a upper S upper O subscript 4 plus 2 upper H subscript 2 upper O.
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