Unit Test — Unit test Answers
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21
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A salt is best described as a compound that is formed from the reaction between
A
an acid and a base.B
a strong acid and a weak acid.C
a strong base and a weak base.D
an acid and water.22
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Look at the diagram showing hydrochloric acid being added to water. Which statement best explains what is taking place?
A
A strong acid is disassociated completely, producing more conjugate base.B
A strong base is disassociated completely, producing more conjugate acid.C
Hydrogen is combining with chlorine to form more acid.D
Hydrogen is combining with chlorine to form a strong base.23
Which description correctly characterizes the acidity or basicity of a solution?
A
The higher the pH is, the more the hydroxide ion concentration decreases and the more acidic the solution becomes.B
The higher the pH is, the more the hydroxide ion concentration increases and the more basic the solution becomes.C
The lower the pH is, the more the hydronium ion concentration decreases and the more acidic the solution becomes.D
The lower the pH is, the more the hydronium ion concentration increases and the more basic the solution becomes.
25
Which statement about the self-ionization of water is correct?
A
Two water molecules interact to form a water molecule and a hydroxide ion.B
Two water molecules interact to form a hydronium ion and a hydroxide ion.C
Two water molecules interact to form two hydronium ions.D
Two water molecules interact to form two hydroxide ions.Did you find these answers helpful?
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