Writing and Balancing Chemical Equations — Unit test Answers
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Consider the reaction below.HF + H2O H3O + FWhich is an acid-conjugate base pair?
A
HF and H3O+B
HF and F
C
H2O and HFD
H2O and F
22
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Consider the reaction below.HI + H2O H3O+ + I–Which is an acid-conjugate base pair?
A
HI and H2OB
H2O and H3O+C
H3O+ and I–D
HI and I–23
Which best describes the definition of Lewis acids and bases?
A
a general definition based on electron structureB
a general definition based on hydrogen ion concentrationC
a specific definition based on a compound’s ability to accept protonsD
a specific definition based on a compound’s ability to donate protons24
The pH of a solution decreases by 2.0. How does the hydronium ion concentration of the solution change?
A
increases to 2 times the original concentrationB
increases to 100 times the original concentrationC
decreases to of the original concentration
D
decreases to of the original concentration
25
H2CO3 is used in soft drinks. What is the name of this compound?
A
sulfuric acidB
carbonic acidC
tartaric acidD
hydrochloric acidDid you find these answers helpful?
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