Chemistry Practice Problems Identifying Acids and Bases Practice Problems Solution: Choose the phrase that best describes the relative...

Solution: Choose the phrase that best describes the relative acid strength of these acids. NH3 ________ H2Oa) is more acidic thanb) has the same acid strength as c) is less acidic than H2Se________ H2Sa) is more acidic thanb) has the same acid strength as c) is less acidic than

Problem

Choose the phrase that best describes the relative acid strength of these acids.

 NH3 ________ H2O

a) is more acidic than

b) has the same acid strength as 

c) is less acidic than

 H2Se________ H2S

a) is more acidic than

b) has the same acid strength as 

c) is less acidic than



Solution

H is attached to a nonmetal (electronegative) → binary acids

When looking at a binary acid we look at both electronegativity and size to determine their strength


NH3 ________ H2O

• N and O are on the same period (row) → Period 2

• Electronegativity: O > N

• H2O is more acidic than NH3

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