Question

Using the K_a values

given in the table, calculate the equilibrium concentrations of all species present and the pH for each of the following.

(a) 0.50 M HC₂H₃O₂ 

[H⁺] 

 = ? M 

[C₂H₃O₂⁻ ] 

 = ? M 

[OH ⁻ ] 

 = ? M 

[HC₂H₃O₂] 

 = ? M 

pH

= ? 

(b) 1.0 M HNO₂ 

[H⁺] 

 = ? M 

[NO₂⁻ ] 

 = ? M

[OH ⁻ ] 

 = ? M 

[HNO₂] 

 = ? M 

pH 

= ?

(c) 0.020 M HF

[H⁺] 

 = ? M 

[F ⁻ ]

 = ? M

[OH ⁻ ] 

 = ? M

[HF]

 = ? M 

pH 

= ?

 

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