Question 1

An acidic solution is diluted until [H3O+] is exactly half as much as before. The pH of the solution is now ____ than before.

Accepted Answer

A)  2.00 higher 
B)  0.69 higher 
C)  0.30 lower 
D)  0.30 higher 
E)  2.00 lower 
A)  2.00 higher 
B)  0.69 higher 
C)  0.30 lower 
D)  0.30 higher 
E)  2.00 lower

Question 2

The larger the value of Ka

Accepted Answer

A)  the less highly dissociated the acid and the weaker the acid 
B)  the less highly dissociated the acid and the stronger the acid 
C)  the more highly dissociated the acid and the weaker the acid 
D)  the more highly dissociated the acid and the stronger the acid 
E)  the answer depends on whether the acid is strong or weak 
A)  the less highly dissociated the acid and the weaker the acid 
B)  the less highly dissociated the acid and the stronger the acid 
C)  the more highly dissociated the acid and the weaker the acid 
D)  the more highly dissociated the acid and the stronger the acid 
E)  the answer depends on whether the acid is strong or weak

An acidic solution is diluted until [H₃O⁺] is exactly half as much as before. The pH of the solution is now ____ than before.

The larger the value of K_a

The Nature of Chemistry

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Quantities of Reactants and Products

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Exam 15: Acids and Bases