What does a Ka value of approximately 1 show about the equilibrium?A.The acid has completely dissociated.B.The solution can act as both an acid and a base.C.Very little of the acid has dissociated.D.Some of the acid has dissociated.

1.0 mole of a weak acid HA was dissolved in 2.0 L of solution. After the system had come to equilibrium, the concentration of HA was found to be 0.34 M. Calculate Ka for HA.

Which of the following Ka values represents the weakest acid?A.Ka = 1.82 10−1B.Ka = 1.29 10−4C.Ka = 1.62 10−12D.Ka = 3.24 10−7

The pH of 0.5 M mono basic acid, HCl is 4.50. Calculate the acidity constant (Ka) and pKa , concentration of H+ and HCl at equilibrium.

37) If the value of POH for weak acid equal 10 and its equilibrium constant Ka= 5.1x104, So the degree of ionization of the acid equals

Part A) Find the percent dissociation of a 0.140 MM solution of a weak monoprotic acid having Ka=2.0×10−3