Consider a weak acid (HA), which dissociates according to: HA(I)
Posted: Tue May 17, 2022 7:26 am
Consider a weak acid (HA), which dissociates according to: HA(I) <H+(aq) + A-(aq) (2.1) The acid dissociaton constant is given by: [H+(aq)][A-(aq)], 2 Ka Y [HA(1}] (2.2) ,where the mean activity constant (Y+) can be obtained using the Debye-Huckle theory: logy+ = -A|z.z_IVI 2+ (2.3) = ,where | corresponds to ionic strength, zi formal charges and A is an environmentally dependent constant. Using this information show that: log Ko = log Ka + B2,2_IVI (2.4) [5 marks]
Posted: Tue May 17, 2022 7:26 am
Consider a weak acid (HA), which dissociates according to: HA(I) <H+(aq) + A-(aq) (2.1) The acid dissociaton constant is given by: [H+(aq)][A-(aq)], 2 Ka Y [HA(1}] (2.2) ,where the mean activity constant (Y+) can be obtained using the Debye-Huckle theory: logy+ = -A|z.z_IVI 2+ (2.3) = ,where | corresponds to ionic strength, zi formal charges and A is an environmentally dependent constant. Using this information show that: log Ko = log Ka + B2,2_IVI (2.4) [5 marks]