Acid/Base Equilibrium Connections

Ka

100

The balanced equation is: 

HCl+H₂O<->H₃O⁺+Cl^-

The Ka expression is…

What is Ka=[H₃O⁺][Cl^-]/[HCl]?

200

The Ka expression of the dissolution of phosphoric acid is…

What is Ka=[H₃O⁺][H₂PO₄^-]/[H₃PO₄]?

300

The Ka expression for the dissociation of formic acid is…

What is Ka=[COOH^-][H₃O⁺]/[HCOOH]?

400

The unbalanced equation is:

_Cu_(s)+_HNO_3(aq)->_Cu(NO₃)_2(aq)+_NO_(g)+_H₂O_(l)

The Ka expression is…

What is Ka=[Cu(NO₃)₂]³[NO]²/[HNO₃]⁸?

Ka, Kb, and Kw

100

Kb=6.7x10^-9, so Ka equals…

What is Ka=1.5x10^-6?

200

At 75 degrees C, Kw is increased by 25%, and the original Ka of 3.4x10^-8 is increased by 15%. At 75 degrees C the new Kb is…

What is Kb=3.2x10^-7?

300

The pH of a weak acid buffer is 4.12, and the concentration of the weak acid is 0.45M and concentration of conjugate base is 0.37M. The Ka value is…

What is Ka=6.2x10^-5?

400

pOH is 7.5 in a certain reaction. The concentration of H₃O⁺ is equal to the concentration of the conjugate. The concentration of acid is .20M. The value of Ka is… 

What is Ka=5.0x10^-13?

RICE Tables

100

In the dissociation of acetic acid, the Ka=1.8x10^-5. The initial concentration of acetic acid is 0.10M, therefore the equilibrium concentration of H₃O⁺ is…

What is [H₃O⁺]=0.0013M or 1.3x10^-3M?

200

In the dissociation of carbonic acid, the Ka=4.4x10^-7. The initial concentration of carbonic acid is 0.05M, therefore the percent ionization of carbonic acid is…

What is 0.3%?

300

In the dissociation of hydrofluoric acid, the Kb=1.5x10^-11. The initial concentration of HF is 0.010M, therefore the pH of the solution is…

What is pH=2.64?

400

In the dissociation of Arsenic acid(H₃AsO₄), the Ka=5.5x10^-3. The pH of the solution is 2.41, so the initial concentration of arsenic acid is…

What is 0.0067M(6.7x10^-3M) or 0.0066M(6.6x10^-3M)?